— I think you’d better type this letter again before Mr. Smith see it. — Oh, dear!
Is this science lab ___ some foreign experts visited last Friday?
.Being examined twice a year is the rule that every driver obey in the city .
_ we left the building that I realized how dangerous the situation had been.
-- What do you think of David ? -- There are some things that are not easy to , and his coldness is one .
The question came up at the meeting we had enough money for our research.