It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off.
| A．may | B．can | C．will | D．shall |
—Has Sam finished his homework today?
—I have no idea. He ________ it this morning.
| A．did | B．has done | C．was doing | D．had done |
I ________ you not to move my dictionary—now I can’t find it.
| A．asked | B．ask | C．was asking | D．had asked |
—What were you doing when Tony phoned you?
—I had just finished my work and________ to take a shower.
| A．had started | B．started |
| C．have started | D．was starting |
—I hear Jane has gone to the Holy Island for her holiday.
—Oh, how nice! Do you know when she ________?
| A．was leaving | B．had left |
| C．has left | D．left |
Turn on the television or open a magazine and you ________ advertisements showing happy families.
| A．will often see | B．often see |
| C．are often seeing | D．have often seen |