Our teacher is always busy preparing lessons until 11 o’clock at night, _____we students have gone to sleep.
| A．that time | B．by which time | C．by that time | D．which time |
Not having a good ________ of English can be a serious disadvantage to achieving your goals.
| A．protection | B．appreciation | C．command | D．experience |
A sense of __________ is the basic requirement for people working in the service industry, such as education and health care.
| A．agreement | B．attention | C．carefulness | D．devotion |
--I left my handbag on the train, but luckily someone gave it to a railway official.
--How unbelievable to get it back! I mean, someone it.
| A．will have stolen | B．might have stolen | C．should have stolen | D．must have stolen |
---Any advice for me?
---You’d better the timetable to see when the train leaves.
| A．consult | B．recommend | C．remind | D．request |
If traffic moves at low speeds, the number of accidents is.
| A．pulled back | B．cut down | C．turned down | D．got away |