The skirt _________is made of silk is very expensive. I can’t afford it.
A. what B. that C. / D. it
—Can you guess if they ________tomorrow?
—They will come if they ________free, I think.
A. come; will be B. will come; will be C. come; are D. will come; are
My grandparents _________for fifty years and they are both quite healthy now.
A. marry B. have been married C. are married D. have gotten married
—Where is Jack?
—I noticed that he ________the teacher’s office just now.
A. went into B. goes into C. was going into D. is going to
—Don’t worry. Your uncle is coming to help you.
—________he doesn’t come?
A. What if B. Why not C. What about D. What for
My friend’s flight had taken off _________ I got to the airport to see him off.
A. while B. after C. before D. until
