I really don’t know____________.
#50551
A
how to do
B
what to do
C
what should I do
D
how I should do
推荐题目
--- Would you mind my singing here?--- _______. I hear that you have been made _____the China’s Got Talent.
#48496
A
Certainly not; to take part in
B
Of course not; take part in
C
Yes. Go ahead; to join in
D
Better not; join
It’s good for you     healthy food and     more exercise.
#49185
A
eat; taking
B
eating; take
C
to eat; take
D
eat; take
My favorite is a film _________ Harry Potter.
#50694
A
call
B
called
C
calling
D
calls
—It’s necessary ____ our environment(环境).  —I agree with you. 
#50553
A
protect(保护)
B
protecting
C
to protect
D
protects