—How much sugar have you put in my coffee? It tastes so bitter．
—I’m sorry to say that there’s _____left．I forgot to buy_____on my way
home．
| A．nothing；it | B．something；anything |
| C．none；some | D．no one；some |
She had just finished her homework __________ her mother asked her to practise playing the piano yesterday.
| A．when |
| B．while |
| C．after |
| D．since |
The girl had hardly rung the bell __________ the door was opened suddenly, and her friend rushed out to greet her.
| A．before |
| B．until |
| C．as |
| D．since |
As is reported, it is 100 years __________ Qinghua University was founded.
| A．when |
| B．before |
| C．after |
| D．since |
He had no sooner finished his speech __________ the students started cheering.
| A．since |
| B．as |
| C．when |
| D．than |
If a lot of people say a film is not good，I won't bother to see it，or I'll wait __________ it comes out on DVD.
A. whether
B. after
C. though
D. until