2No one tell us ----,so we neen your help.

2No one tell us ____,so we neen your help.
A how will we do
B what should wo do
C how to do it
D what do
3I _____ think ____ rain this afternoon.
Don't take an umbrella with you.
A don't;it won't
B don't;it's going to
C /;it doesn't
D /;it's not going to
4We think ____ important that we should master at least one foreign language.
A it
B that
C what
D which