Some scientists say that the tomato is technically a fruit，＿＿it is eaten as a vegetable．
| A．although | B．because | C．as if | D．as long as |
_______ didn't attend the lecture yesterday won't be given full marks.
| A．Any one | B．Whoever |
| C．Who | D．The person |
It could be learned from the teacher's eyes ________ he was very satisfied with her performance.
| A．that | B．whether |
| C．what | D．where |
—How will you deal with these papers, Ann?
—I will leave them to ________ takes over the job.
| A．anyone | B．someone |
| C．whoever | D．no matter who |
—What upsets him?
—________ his computer is out of order.
| A．Whether | B．What |
| C．That | D．How |
Whether ways will be found to stop pullution or not is just ________ worries the public.
| A．why | B．which |
| C．that | D．what |