It’s very convenient ______ us to buy train tickets now because we can buy them either from the station or on the Internet.
| A．to | B．of | C．by | D．for |
_______the past two months he has been busy with his school work.
| A．For | B．On | C．Since | D．At |
________last Saturday, we had two football matches with Class Two.
| A．For | B．/ | C．By | D．During |
We will be in Nanjing _____ Tuesday ______Thursday.
| A．on/ through | B．on/to | C．from/to | D．on. /till |
Mr. Black will visit our new school building ______ two days.
| A．before | B．after | C．at | D．in |
_______ the end of last spring Wang Hai joined the army _______ the end.
| A．At/at | B．By/in | C．In /at | D．At /in |