Comrade Li Dazhao, _____ librarian of Beijing University, was one of the founders of the Chinese Communist Party.
| A．sometimes | B．sometime | C．some time | D．some times |
Every second counts in the exam, _________ means you must make the best use of the time available.
| A．who | B．that | C．which | D．What |
John isn’t here right now. He ______ Mr. Black’s office. Perhaps he______ in several minutes.
| A．is going to; has come | B．has been to; has come |
| C．has gone to; will come | D．went to; would come |
It is said that the second book __________ is written by the singer hasn’t come out yet.
| A．which | B．that | C．who | D．What |
— Dad, would you please buy some strawberries for me? I love them.
— I'd like to, but they are not _____ in winter.
| A．accustomed | B．convenient | C．casual | D．available |
So suddenly _____ the disease that the whole family were at a great loss.
| A．did he catch | B．he caught |
| C．was he caught | D．he was caught |