We should often keep _____ touch with each other, because we are good friends.
| A．on | B．to | C．in | D．up |
The first class begins _______ 8 o’clock ______ the morning.
| A．at/on | B．at/in | C．on /in | D．on/on |
_______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 |