A______ means a careful study, especially in order to find some new facts or information.
A. deal B. research C. Class
—Did you watch the basketball match yesterday?
—Yes. You know, Jeremy Shu-How Lin, who is one of my heroes, ________ in the match.
| A．is playing | B．has played | C．was playing | D．had played |
— These books are not yours, are they?
—________. I am looking for mine.
| A．Yes, they are | B．No, they aren’t | C．Yes, it is | D．No, it isn’t |
—Did the book provide the information you need?
—Yes. But ________ it, I had to read the whole book.
| A．found | B．to find | C．find | D．finding |
—Would you like to go hiking with us this Sunday?
—Sure, _______ I am busy.
| A．until | B．when | C．unless | D．since |
She was really sad becauseshe was told she ________give up volleyball.
| A．was able to | B．preferred to | C．would rather | D．would have to |