I have his address, so I did not have any ________ his house.A. difficulty finding out B. difficulty finding C. difficulty looking for
We should play a part in ______ the earth.
The two students practice spoken English______ joining the English club.
You can’t get good grades______ you study hard.
-I can’t decide______. – You mean the red one or the blue one?
We need ______ and ______ for the milk shake.