—_______ is this pen？ —It’s mine.
| A．What | B．Whose |
| C．Where | D．How |
It’s so hot. Look! The kids _________ at the pool.
| A．swims | B．swam | C．are swimming | D．was swimming |
Can you tell me_____________?
| A．when did the train arrive | B．whether has the train arrived |
| C．when will the train arrive | D．whether the train has arrived |
Put on more clothes, Kate. The window in our room ______ yesterday.
| A．was broken | B．are broken | C．have broken | D．will break |
It is necessary for us________ good habits in our daily life.
| A．keep | B．to keep | C．keeping | D．kept |
Jeff _______the hospital if he feels better in a few days.
| A．leaves | B．left | C．will leave | D．has left |