---________ will your head teacher return from the USA?
---In two days.
| A．How long | B．How soon | C．How often | D．How old |
—How was your weekend？
—Great！We ________ a picnic by Dongchang Lake．
| A．have |
| B．are having |
| C．had |
| D．will have |
—When ________ you free last week？
—Well，I ________ have a free day because I had too much work．
| A．did；didn’t |
| B．were；didn’t |
| C．were；wasn’t |
| D．did；wasn’t |
________ is really hard ________ them to climb such a high mountain．
| A．This；to |
| B．It；to |
| C．This；for |
| D．It；for |
—I called you yesterday evening，but you were not in．
—Sorry．I ________ in the shop with my mother．
| A．am |
| B．will be |
| C．was |
| D．have been |
—Dave called you about half an hour ________，Anna．
—Thank you．I’ll call him back．
| A．ago |
| B．before |
| C．after |
| D．later |