There______ more than one student who_______ late this morning.
| A．have been, was | B．has been, were | C．were, was | D．was, was |
________ they become dirty, the lakes are not able to clean themselves
| A．Once | B．Since | C．As | D．Because |
I think he is ________ to win, but I’m not sure.
| A．possible | B．likely | C．probably | D．certain |
The weather turned out to be fine yesterday, I _____ the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
They ______ a tent and got ready for the night when evening came.
| A．put off | B．put up | C．put on | D．put out |
–Did you go to the show last night?
–Yeah. Every boy and girl in the area _______ invited.
| A．were | B．have been | C．has been | D．was |