We apologize for any inconvenience you _______ have been caused by the delay of the flight.
| A．may | B．would | C．must | D．need |
It was not until then that I came to know knowledge ____ only from practice.
| A．had come | B．came | C．would come | D．comes |
I don’t really work here, I _____ until the new secretary arrives.
| A．just help out | B．have just helped out |
| C．am just helping out | D．will just help out |
After the new technique was introduced, the factory produced______ tractors in 1998 as the year before.
| A．as many twice | B．as twice as many |
| C．twice as many | D．twice many as |
There is no cause to tremble ______ his judge.
| A．in front | B．beside | C．after | D．before |
--- When shall we meet again?
--- Make it ___ day you like; it ’s all the same to me.
| A．one | B．any | C．another | D．some |