We should never ____till tomorrow what we can do today.
| A．put on | B．put off | C．give up | D．give back |
___ study in No.4 Middle School?
| A．Did you used to | B．Did you use to | C．Do you used to | D．Do you use to |
Usually we get ________ about something and end up _________ in Chinese.
| A．exciting; speaking | B．exciting; speak | C．excited; speaking | D．excited; speak |
We can’t fix this machine well. Can you show us ___?
| A．how to do | B．what to do it | C．how to do it | D．where to do |
Did you see them ____ basketball this morning?
| A．playing | B．were playing | C．to play | D．are playing |
He didn’t study hard, so he was afraid ______ in the exam.
| A．fail | B．to fail | C．failing | D．failed |