________ we have finished the course, we shall do more revision work.
| A．Now that | B．For | C．Ever since | D．By now |
There seems to be two causes as I try to figure out __________ that prevents so many children from being as happy as before.
| A．how it is | B．when it is |
| C．what it is | D．why it is |
We were struck by the limited use __________ their natural resources.
| A．those villagers made of |
| B．which those villagers made |
| C．for those villagers made of |
| D．for those villagers making of |
Cook was a strict but good captain, __________ usually took care of the sailors on his ship.
| A．the one who | B．one who |
| C．that | D．he who |
---How long do you think it will be __________ China sends a manned spaceship to the moon?
--- Perhaps two or three years.
| A．when | B．until |
| C．that | D．before |
You’d better take something to read when you go to see the doctor __________ you have to wait.
| A．even if | B．as if |
| C．in case | D．in order that |