—How many nights do you plan to stay with us?
—Three. I’ll be______Friday morning.
A.turned in B.leaving out C.checking out D.kept out
I felt somewhat disappointed and was about to leave _________something occurred which attracted my attention.
A.unless B.until
C.when D.while
—Did you have a good time at the party?
—Thanks. I appreciated______to your home.
A.to be invited B.to have invited C.being invited D.having invited
Most people who’ve had chicken pox(水痘)once are _____it for the rest of their lives.
A.free from B.immune to C.concerned about D.infected with
He left home early only______he was late as he went a wrong way.
A.found B.to find C.finding D.being found
—This is the refrigerator______ we had so much trouble.
—Get someone to repair it .
A.at which B.of which C.with which D.to which
