Instructions for homework have to be ______ so that every student knows clearly what is to do after class.
—Was the label ________your luggage? — No,it wasn’t.
they speak their own kind of English.
Mary is giving me English lessons my teaching her Chinese.
Clouds are gathering, I think we’d better ______for the hotel in case it ______to rain.
June 25, 2011 _______a very bright night in Nanshan Middle School that will never _______from memory. Our school has made great breakthrough in the field of education.