The student ___ themselves in the meadow by the lake.
| A．sat | B．are sitting | C．were seated | D．seated |
—Everyone in my class passed the exam.
—Oh, really? It ________ difficult.
| A．can’t have been | B．needn’t have been |
| C．must be | D．mightn’t be |
I ran across David while walking along the street yesterday. I ________ him for three years.
| A．hadn’t seen | B．didn’t see |
| C．haven’t seen | D．don’t see |
—You are required by law _______ seat belts.
—Thanks for your reminding. I’ll do it right away.
| A．wearing | B．being worn | C．to wear | D．to be worn |
______ such a heavy loss in the earthquake, they got help from all over the world.
| A．Suffer | B．Having suffered |
| C．Suffered | D．To suffer |
I will go to the seaside for a holiday with my family as soon as I ______ what I am doing.
| A．would finish | B．have finished | C．finishing | D．finish |