Oh, my god! Our house __________last night. Look at the footprints (脚印) on the floor.
| A．broke into | B．was breaking into |
| C．broken into | D．was broken into |
I have been skating _______ nine o’clock.
| A．for | B．since | C．at | D．from |
He _____ when the UFO arrived.
| A．was sleeping | B．were sleeping |
| C．has slept | D．is asleep |
The teacher said that they ______ hard-working students.
| A．is | B．are | C．were | D．was |
His father _____ to Nanjing. He _____ back next week.
A. has been, is B has been, will be
C. has gone, is D. has gone, will be
The teacher encourages her students ____ English as much as possible.
| A．to speak | B．speaking | C．speak | D．spoke |