The surface of the table ______ smooth enough．
A．hash’t felt B．isn’t feeling C．doesn’t feel D．isn’t felt
一Why didn’t you try your best to get on the bus?
一I tried to，but ______ I could，it started moving．
A．until B．when C．before D．after
You seem to have a ready—made answer _______ I ask you a question．
A．however B．whatever C．whichever D．whenever
一You have made great progress in your studies of English，haven’t you?
一Yes，but much _______ ． ‘
A．remains to do B．is remained to do
C．remains to be done D．is remained to be done
________ to overcome the difficulty，he works day and night．
A．Determined B．Determining
C．To determine D．To be determined
He is always _______ not to do that；but he still goes on doing it all the same．
A．telling B．being told C．told D．to tell
