一、 There are 20 incomplete sentences in this section. For each of these, there are 4 choices marked A, B, C, and D. Choose the ONE that best completes the sentence.
1. Children get parents ______ Christmas and ______ their birthdays.
A. on, at B. in, at C. at, on D. by, on
2. They talked ______ low voices in order not to be heard.
A. at B. by C. on D. in
3. She was ______ her twenties when she went abroad.
A. at B. in C. for D. of
4. There are many birds singing ______ the trees.
A. in B. on C. at D. with
5. Mike received an award ______ his outstanding results in the exams.
A. to B. about C. for D. with
6. Tom lost his way, ______ delayed him considerably.
A. that B. when C. where D. which
7. If he ______ here I could explain to him myself.
A. is B. has been C. were D. was
8. The district grew peas ______ a large scale.
A. on B. in C. by D. to
9. I’m going to Paris ______ my brother is coming as well.
A. both B. or C. either D. and
10. The time has come ______ we can make extensive use of nuclear energy.
A. as B. when C. while D. since
11. The boss may ______ Tony because he has the right qualifications.
A. fire B. fine C. dismiss D. hire
12. He knew nothing about this journey ______ he was likely to be away for three months.
A. that B. except that C. however D. in addition
13. What time ______ for work?
A. are you usually leaving B. do you usually leave
C. you usually leave D. you usually left
14. ______ you nervous during the interview?
A. Were B. Did C. Do D. Had