Was it in 1969 __________ the American astronaut succeeded __________ landing on the moon?
| A．when；on |
| B．that；on |
| C．when；in |
| D．that；in |
The monkey was so lucky that it just missed ______ .
| A．catching | B．to be caught | C．being caught | D．to catch |
Tom kept quiet about the accident _______lose his job.
| A．so as not to | B．so not as to | C．so as to not | D．not so as to |
There was a terrible noise _______ the sudden burst of light.
| A．followed | B．to be followed | C．following | D．being followed |
The sentence needs _______ once more.
| A．explained | B．explaining | C．being explained | D．to explain |
The computer centre, _______ last year, is very popular among the students in this school.
| A．open | B．opening | C．having opened | D．opened |