____ can be seen in the chart right here, the air pollution level in the city has been increasing over the last months.
| A．What | B．It | C．that | D．As |
He transplanted the little tree to the garden it was the best time for it.
| A．where | B．when | C．what | D．that |
It was not until dark he found he thought was the correct way to solve the problem.
| A．that; what | B．that; that | C．when; what | D．when; that |
---Sir, I’m terribly sorry for not having handed in my homework on time, but I have been very busy all these days.
---No excuse for it, but I drop it this time.
| A．might | B．can | C．should | D．must |
The little girl, who has been spoiled has got used to everything she needs.
| A．being offered | B．offer | C．offering | D．be offered |
Whenever possible, Mr Smith how well he speaks Spanish.
| A．shows up | B．shows around | C．shows off | D．shows out |