Thank you for your timely help; otherwise we _______ in great trouble now

1. A.
   are
2. B.
   would have been
3. C.
   would be
4. D.
   were

Thank you for giving up your coffee break to help.I know you always need_____after three classes.

A. that   B. one  C. it  D. this

Thank you for giving up your coffee break to help.I know you always need_____after three classes.

A. that   B. one  C. it  D. this

Thank you for giving me a hand. I ______ in the experiment without your valuable help.

A. have failed        B. will fail      C. would have failed        D. must have failed

Thank you for giving me so much help. I _______in the experiment without your support.