He kept on _______ the mountains all by _______ for three days.
| A．to climb; myself | B．to climb; himself |
| C．climbing; myself | D．climbing; himself |
Lily turned off the lights and then __the classroom.
| A．leaves | B．will leave |
| C．left | D．is leaving |
His parents ____ coming to meet the teacher tonight.
A. are B. were C. is
Miss Lee ___the children an English song when I saw her.
A. is teaching B. was teaching C. taught
—Must I hand in the weather report this morning?
--No, you__.
A. mustn't B. needn't C. may not
The teacher will be backan hour.
A. in B. after C. on