Only in this way, _______succeed in solving the problem.
| A．you can | B．can you | C．you would | D．could you |
It is he, not you, _____ right.
| A．who are | B．who is | C．which is | D．that are |
Those _____ know the answer put up your hands.
| A．who | B．which | C．that | D．whom |
It’s only ten minutes ______ the meeting but he’s still not here yet.
| A．for | B．at | C．by | D．till |
By the time he was twelve he ______ a chemistry lab of his own.
| A．built | B．has built | C．had built | D．was building |
David jumped _____ to get the first ______ the beginning of the sports.
| A．enough high; in | B．enough highly; in |
| C．high enough; at | D．highly enough; at |