She had just finished her homework her mother asked her to practice playing the piano yesterday.
| A．when | B．while | C．after | D．since |
Nowadays people are more concerned about the environment _______ they live.
| A．what | B．which | C．when | D．where |
which university to attend, the girl asked her teacher for advice.
| A． | Not knowing | B． | Knowing not | C． | Not known | D． | Known not |
He is so busy. He cannot afford enough time with his son _______ he wants to.
| A．even if | B．as if | C．because | D．before |
you said at the meeting describes a bright future for the company.
| A． | When | B． | How | C． | What | D． | That |
--Why are your eyes so red? You _______ have slept well last night.
| A．can't | B．mustn't | C．needn't | D．won't |
---Yeah, I stayed up late writing a report.