—Thank you for reminding me of the time, or I ____ late yesterday. —Don’t mention it.
I was about to leave the office ______ an unexpected visitor came. A. whileB. asC whenD. before
.It was a matter of ________ would take the position.
The tablecloth _____ 18 by 20 feet. A. is measuredB. measuresC. measureD measuring
People try to avoid public transportation delays by using their own cars, and this ____ creates further problems.
It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.