The bus ____ at six, but it arrived an hour later.
| A．should arrive | B．had arrived |
| C．should have arrived | D．must arrive |
Spider was up and standing at the door, with every hair of her body .
| A．stood up | B．on its end | C．on end | D．on the end |
The oil must be used up, the light went out.
| A．for | B．because | C．since | D．as |
---Poor Tom! He will have to work all the next month.
---Luckily, the basketball games are held.
| A．except | B．except that | C．except when | D．except for |
I like traveling by sea it is not rough.
| A．unless | B．in case | C．as long as | D．although |
For miles around me there is nothing but a desert, without a single plant of tree .
| A．in sight | B． on the earth | C．at a distance | D．in a place |