I can never forget the days _____ we worked together and the days _____ we spent together.A. when; which B. which; when C. what; that D when; when
__________ you understand the rule, you will have no further difficulty.
—Tony, you must have noticed the student who broke the window. —I’m sorry. I _______ attentively.
He didn’t seem to mind_____________ TV while he was trying to study
Staying one day in a Shangri-la Hotel costs _______ renting a house in my hometown for a month.
_______ not to drive after drinking, some drivers are still trying their luck, which is really dangerous.