My English teacher is really ___．She is often seen working in her office far into the night．
| A．warm-hearted | B．easy-going | C．hard-working | D．self-confident |
Only according to the directions can the medicine be quite effective .
| A．taking | B．taken | C．being taken | D．having been taken |
—I really don’t know how to thank you enough .
—.
| A．No problem | B．Think nothing of it |
| C．Not at all | D．It doesn’t matter |
—Mark broke his leg when he was playing football .
—was that ?
| A．Since when | B．Since when ago | C．How long | D．How long ago |
The brake of your bicycle has come loose . You’d better it .
| A．settle | B．fix | C．pick | D．correct |
Our ancestors celebrated birth of child by giving away red eggs .
| A．the ; a | B．the ; the | C．不填; a | D．不填； the |