Generally speaking, according to the directions, the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |
The students competed ___ each other ____ the honour of winning in school sports meet.
| A．against; for | B．for; against | C．with; at | D．at; with |
It was raining heavily outside. The children were made _______ in the classroom.
| A．stay | B．staying | C．stayed | D．to stay |
As a senior high school student, my days ____ classes and homework.
| A．are taken up | B．are filled with | C．are full with | D．are taken over |
--- What did Zhai Zhigang do while he was doing “walking” ____?
--- He ____ our national flag to the world.
| A．in space; showed | B．in the space; showed |
| C．in space; brought | D．in the space; brought |
I ____ in the street when I met an old friend of mine the other day.
| A．walked | B．was walking | C．has walked | D．had walked |