1.The troops advanced _______ because the area had been mined by the enemy.
2.Many kinds of animals are believed to have _________ from the earth
3.If I ( ) you, I would give up the job.
4.If you have any problems during your study here, please do not _______ to call me for help.
5.It is not ---_______ for me to return all the books to the library now because I still need some of them for my research.
6.The doctors ( ) the medicines to the people in the flood area.
7.The captain apologized ________ to tell us more about the accident.
A. for to be unable
B. that he was unable
C. to be unable
D. for being unable
8.When the temperature is below zero, water will( ).
9.This river forms a natural ( ) between China and Korea.
10.We may be able to ( ) you in some way if you can not finish your work on time.
11.The college students in China are _______ from smoking on campus because this will do them no good.
12.I was caught ( ) the rain yesterday.
13.When there’s a doubt, the chairman’s decision is ( ).
14.We do not have a ( ) school in our institute. The highest degree we provide for the students is a B. A. and a B. S. .
15.John ( ) to be a polite man. But in fact he is very rude.
16.Students with _______ problems may apply for student loans.
17.Although the traffic is not busy, he likes to drive at a _______ speed.
18.No doctors could cure the patient ( ) his strange disease.
19.We are _______ at the rapid progress Mark has made in this semester.
20.Without a proper education, people could _______ all kinds of crimes.
21.He made a rough _______ of the first floor of that building, showing us where his office was located.
22.He always leaves ( ) for all the words he does not know in his translation.
23.Hello! Is that 21035? Please put me ________ to the manager.
24.When making modern cameras , people began to ( ) plastics for metal.
25.We can not trust him any more because he often ________ his duty.
26.When heated, water changes into _______.
27.As a teacher, you should not _______ the students from asking questions in class.
28.We are ( ) at the rapid progress Mark has made in this semester.
29.The ( ) is nearly dead , so I can not start the car again.
30.The moon ( ) around the earth.
31.The driving instructor told me to pull ( ) at the post office.
32.We can rely on William to carry out this mission, for his judgment is always ________.
33.The news has not yet been officially ( ) by the government.
34.Her sister has become a lawyer, ___she wanted to be.