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
. ---Have you seen ____ iphone? I left it on the desk this morning.
---Is it ____ white one? I think I saw it somewhere.
A. an; the B. the; the
C. an; a D. the; a
