It is because English is being widely used at present _______.
| A．why we learn it hard | B．that we learn it hard |
| C．which we must learn | D．when we should learn |
Dolly wants to cycle round the world and she is really keenthe idea．
| A．on | B．for | C．at | D．with |
From time to time a crocodile has snatched someone _______ he or she is even aware that the crocodile is there.
| A．when | B．until | C．since | D．before |
_____ unemployment and crime are high, it can be assumed that the latter is due to the former.
| A．Before | B．Where | C．Unless | D．Until |
_____the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
| A．If | B．While | C．Because | D．As |
It was a matter of________ would take the position.
| A．who | B．whoever | C．whom | D．whomever |