Have you heard that the research he spent most of his time_______ perfect success?
| A．on was a | B．to be |
| C．being a | D．on being |
—I can’t find my notebook, mom. _______ is it?
—Peter, it’s under the chair.
| A．What | B．Where | C．When | D．How |
—Is this ________ key, Tom?
—No, that one is ________.
| A．your; mine | B．her; his | C．my; her | D．your; yours |
.—Is this your book, Jane?
—_______. Thank you!
| A．Yes, this is | B．Yes, it is | C．No, this isn’t | D．No, it isn’t |
—I like this sweater. I’ll take it.
—Please pay for (付款) it. It’s 100 yuan.
| A．sell | B．bring | C．ask | D．buy |
—Do you like ball games?
—Yes. They are very fun.
| A．easy | B．much | C．interesting | D．useful |