Jack spends much money on books____ he is not so rich.
A．though B．when
C．if D．because
—Do you know if we will go to the cinema tomorrow?
— I think we’ll go if we______too much homework.
A．will have B．have
C．won’t have D．don’t have
I haven’t heard from Bill ______he left here.
A．when B．before
C．since D．while
I won’t believe that five-year-old boy can read five thousand words_____I have tested him myself.
A．after B．when
C．if D．until
John fell asleep_____he was listening to the music.
A．after B．before
C．while D．as soon as
—Can you guess if they____ to play basketball with us!
—I think they’ll come if they _____free.
A．will come; will be B．will come; are
C．come; are D．come; will be
