13.The reason is____________ smoking tobacco causes illness.A. why B because C. that D. because of
Our English teacher is wearing a gold watch, ________are made of small diamonds
__________at the door before you enter the office,or you’ll be considered impolite
It was March 14th.2013__________Xi Jin ping was elected chairman of the People’s Republic of China
Camacho,the former Chinese football coach,__________ in China between 2011 and 2013
—Mum, shall I watch the TV program Happy Camp today?—__________.You have so much homework to do!