Not until we have had a chance to discuss it thoroughly ________ perfectly.
A．the problem has been settled
B．has the problem been settled
C．will the problem be settled
D．the problem was settled
—Have you been to the Great Wall?
—Perhaps not in my memory.________，it might have been during my early childhood.
A．If any B．If so
C．If ever D．If not
More than a dozen students in that school ________ abroad for further study every year.
A．sent B．are sent
C．have been sent D．have sent
—Mum，I am afraid I won’t do well in the coming test.
—Honey，________more careful，________you will make it.
A．is；so B．be；and
C．be；then D．being；and
As I looked at the memorial，I thought about ________ terrible disaster it was for the people in Nanjing then and ________ they were to fight the Japanese invaders.
A．how；how B．what a；how
C．what；what D．how；what
His parents thought only in this way ________ become successful，studying abroad.
A．could Tom B．Tom could
C．is Tom able to D．Tom is able to
