he will return to his native land.
| A．It is long before that | B．It is before long that |
| C．It won’t be long before | D．It will be long before that |
A computer can only do ____ you have instructed it to do.
| A．how | B．after | C．what | D．when |
It wasn't until nearly a month later________I received the manager's reply .
| A．since | B．when | C．as | D．that |
______ is no possibility _____ the shy girl can win the first prize in the English speech contest.
| A．There; that | B．It; that | C．There; whether | D．It; whether |
Generally speaking, nobody will work with _____ has a bad virtue.
| A．no matter who | B．anyone | C．whomever | D．Whoever |
— Have you found your English book?
— I am not sure ____ I could have left it.
| A．whether | B．what | C．when | D．where |