—I do believe the scientific explanation that when a tomb is opened, the fresh air disturbs the viruses inside it. What about you?
—So do I. If _______ in, the disturbed viruses may cause illness or even death.
| A．breathing | B．breathed | C．being breathed | D．to breathe |
If it for your help,we would be in serious trouble.
| A．isn’t | B．aren’t | C．hasn’t been | D．weren’t |
The factory has workers because of the drop in sales.
| A．laid out | B．laid off | C．laid aside | D．laid down |
—We weren’t sure which way to go.In the end,we turned right.
—You the wrong way.Youleft.
| A．had gone;must have turned |
| B．went;must turn |
| C．have gone;would have turned |
| D．went;should have turned |
—I didn’t see her yesterday,I looked for her everywhere,but couldn’t find her.
—Oh,but you .She was working in the office.
| A．must have | B．ought to | C．ought to have | D．can’t have |
The desks and seats can be the height of a child.
| A．adopted to | B．adjusted to | C．adjusted as | D．adopted as |