After ______ seemed a hopeless wait, four coal-miners trapped in the mine for 125 hours were finally rescued in Heilongjiang Province.
A. when B. that
C. it D. what
The real secret to successful learning lies in students ______ an interest in what they are doing.
A. to take B. taking
C. taken D. having taken
---Fancy meeting you here, Lucy! I never thought you visit us today.
---Sorry, I forgot to tell you I was coming. I hope you don’t mind me ______.
A. calling in B. pulling in
C. breaking in D. dropping in
--- Was it by cutting down unnecessary expenditure ______ Mr. Simon saved the firm?
--- No, it was by improving work efficiency.
A. when B. what C. how D. that
The house, ______ door often stays open until late at night, works as a home for the guards, some of ______ are from the countryside.
A. whose; whomB. which; whom
C. whose; themD. where; them
---What have you learned from your experience in the USA?
---Well, meeting people from another culture ______ be very difficult.
A. mustB. can
C. shouldD. shall
