Someone must have taken it away this morning, ____?
| A．haven’t they | B．hasn’t he | C．don’t they | D．didn’t he |
Does _______ matter if he can’t finish the job on time?
| A．this | B．it | C．he | D．that |
I don’t think _______ possible to master a foreign language without much memory work.
| A．it | B．that | C．its | D．this |
Therearetworoadsandeither ________tothestation.
| A．leads | B．lead | C．areleading | D．isleading |
Whenandwherethistookplace_________stillunknown.
| A．are | B．were | C．is | D．has |
Ourfamily____ahappyone.
| A．is | B．are | C．was | D．were |