Sometimes smiles ________ be false, hiding other feelings like anger, fear or worry.
The 16th Asian Games started _______ November 12th, 2010 in Guangzhou.
David wants to be _______ engineer while Cathy wants to be _______ doctor.
The number of foreign students _________Chinese Universities_________ rising steadily since 1990.
I really don’t know _________ I had my money stolen.
The teacher asked Jim _______________.