Please________the door so that the dog can’t go into the room．The babies are sleeping in the room and they are afraid of dogs．
A．open
B．close
C．turn on
B．turn off
—I called you at seven o’clock last evening, but nobody answered the phone.
—Oh, my husband and I __________ outside.
A. took a walk
B. have taken a walk
C. were taking a walk
I prefer books ________ are educational and interesting.
A. that B. what C. who
—The flowers are beautiful. How do you look after them?
—Well, this kind of flowers _________ every morning.
A. should water B. waters C. must be watered
—How long have you been working in this city?
—_______________.
A. Five years ago.
B. Since last year.
C. After I left university.
Could you please _________here? It’s a no-smoking area.
A. not smoke
B. not to smoke
C. don’t smoke