Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
It is often________that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
，please start the work tomorrow.
| A．If you are convenient | B．If it is convenient for you |
| C．If it is convenient of you | D．If convenience |
----Will you go to the party?
----Of course I will.
| A．if invited | B．if having invited | C．if I was invited | D．if I will be invited |
Generally speaking_______acording to the
instructions，the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |
Is that a book on farming?_______,I want to borrow it.
| A．So it is | B．If so | C．So is it | D．So if |