The stones each ________ as much as two tons.
A. weighs B. are weighed C. weigh D. is weighed
________ to overcome the difficulty，he works day and night．
A．Determined B．Determining
C．To determine D．To be determined
一Did he notice you enter the classroom?
一I don’t think so．He _______ to the radio with his eyes shut·
A．1istened B．was listening
C．has listened D．had listened
I think it’s impolite to play ______ trick on others just for ______ fun
A．a：＼ B．＼；a C．the；＼ D．a；a
I have bought two ball pens ,______ writes well.
A. none of them B. neither of them
C. neither of which D. none of which
—— Oh, it’s raining hard outside. Mum, do you think the milkman will come?
—— Of course. He will come on time _____it rains.
A. in case B. even though C. as long as D. ever since
