She kept _________ hard at her physics and finally caught up with us.
| A．work | B．worked | C．working | D．to work |
当你向别人打听某事时，你应该说：________。
| A．Hello. | B．Sorry. | C．Excuse me. | D． Hi. |
找出都是三笔完成的一组字母：_______
| A．AEHIF | B．AHIME | C．NKHIE | D．BKGWF |
下列字母________是元音字母，26个字母中第16个字母是________。
| A．Oo; Ff | B．Uu; Pp | C．Mm; Qq | D．Rr; Nn |
—Your pencil case is very nice.
—________.
| A．Thank you | B．Excuse me | C．Yes, it is. | D．No, it isn’t |
______ your teacher for your pen.
| A．ask | B．Ask | C．Find | D．find |