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
You and I could hardly work together, _____?
A. could you B. couldn’t I
C. couldn’t we D. could we
Do you consider it any good _____ psychology?
A. to learn B. to have learned
C. learning D. having learned
Lack of money led the company to a situation _____ they had to decide whether they should keep on with their production.
A. when B. where C. that D. which
_____ by the advances in technology, many farmers have set up wind farms on their land.
A. Being encouraged B. Encouraging
C. Encouraged D. Having encouraged
_____ the police thought he was the most likely one, they could not arrest him since they had no exact proof about it.
A. Although B. As long as C. If only D. As soon as
