Japan has been trying to bring its nuclear crisis under ____ control, but ____ spread of radiation has raised concerns about the safety of the nuclear energy.
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 _______________.
The writer is very popular with young people ____ he has been dead for many years.