“Drive-ins” have large parking lots ________ customers are served in their cars by waitresses.
If the bike is broken again, you'll have to pay to _____ .
A new company _____ here at present. They hope to finish it next month.
The hottest continent, Africa has a lot of resources, ______ are still undeveloped.
----when are you going off for your holiday? ----My plane ______ at 9:20, so I must be at the airport by 8:20.
After the teacher called him into the office, the boy admitted _______ in the test.