Mary made coffee___________her guests were finishing their meal
A so that B although C while D as if
Cars, buses and bikes ________ stop when the traffic lights turn red.
| A．can | B．may | C．must | D．need |
_______ we got to the station, the train had left already.
| A．If | B．Unless | C．Since | D．When |
Tom kept quiet about the accident _____ lose his job.
| A．in not order to | B．in order not to |
| C．in order to not | D．not in order to |
He is very old, ______ he still works very hard.
| A．but | B．if | C．when | D．as |
I rang you several times yesterday but couldn’t ______.
| A．get on | B．get down | C．get through | D．get to |