Find ways to praise your children often,______you'll find they will open their hearts to you.
A. till B. or
C. and D. but
_______ work did we have to do that we were so exhausted.
A. Too much B. So much
C. Too little D. So little
Little ______ about his own safety, though he was in great danger himself.
A. cared he B. he cared
C. did he care D. was he cared
Most children need encouragement in time of failure ______ they can cheer up again.
A．so that B．in case
C．because D．if
______about wild plants that they decided to make a trip to Madagascar for further research.
A．So curious the couple was
B．So curious were the couple
C．How curious the couple were
D．The couple was such curious
It's difficult to how much time the project will take.
A．count B．complete
C．calculate D．account
