Every possible means ________, but it seems that nothing will prevent the situation from getting worse.
My grandmother used ___ an English teacher.
Miss Liu will teach ___ English nest month.
—Where can I see Tom?—I don’ know where he is. He hasn’t arrived ___ .
— What do you think of the two cars?— The one is ___ than that one.
— I think it’s a good idea to have classes on the Internet.— ______ . I don’t want to stay at home alone.