— Show me your permit, please.
—Oh, it's not in my pocket. It
| A．might fall out | B．could fall out |
| C．should have fallen out | D．must have fallen out |
John asked his mom ________.
| A．where did she put his coat | B．where she put his coat |
| C．did she put his coat where | D．where was she putting his coat |
The bus hit the huge stone by the road heavily _________ he could stop it.
A. after B. before C since D. until
____________ to do the repair, and what you need is only a hammer and some nails.
| A．It is hard | B．That is easy | C．That is hard | D．It is easy |
They’re not playing baseball today ___________ the rain.
| A．because | B．as | C．since | D．because of |
I have no idea ________ is better, so I took _______ of them.
| A．what, both | B．what, none | C．which, both | D．which, all |