IV. Use of English. Put the verbs in brackets in the (to)- infinitive or the -ing form
1. I am interested in ___(teach) English.
2. I can't make my son __(study) in the morning.
3. We are sorry to keep you __(wait).
4. Do you enjoy ＿(sing) ?
5. It's too cold __(wait) outside.
6. I expect __(finish) this by Monday.
