It is believed that _____ European scientist invented _______.
| A．an; a television | B．a; a television |
| C．an; the television | D．a; the television |
______ your composition carefully, some spelling mistakes can be avoided.
| A．Having checked | B．If you check |
| C．Check | D．To check |
—Where have you been recently?
—I ________ in Hangzhou on business for a week last month.
| A．have been | B．had gone | C．had been | D．was |
We are looking forward to ______ another chance ______ it again.
| A．be given; to try | B．give; to try |
| C．giving; trying | D．having; to try |
—What were you trying to prove to the police?
—I was last night.
| A．That | B．When | C．Where | D．What |
—Are you pleased with what he has done?
—It couldn’t be ________ . Why didn’t he put more effort into his work?
| A．any worse | B．much better | C．so bad | D．the best |