They talked about the persons and things ______ they remembered at school.
| A．which | B．who | C．that | D．whom |
—Who is the girl standing over there?— Well, if you _____ know, her name is Mabel.
| A．may | B．can | C．must | D．shall |
—They haven’t finished the work up to now.—Well, they________.
| A．should | B．should have | C．would | D．must have |
It is not like Jack to be unfriendly, so he _________ you when you called.
| A．can’t have seen | B．should not have seen |
C．must not have seen | D．need not have seen |
He used to teach in that university and I _________ ride past it on my way to work.
| A．would | B．could | C．should | D．might |
On Sundays when I was a child, Father and I _______ get up early and go fishing.
| A．could | B．would | C．might | D．should |