He is only too ready to help others, seldom, ____, refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
A warm thought suddenly came to me________I might use the pocket money to buy some flowers for my mother's birthday。
| A．if | B．when | C．that | D．which |
—Your hometown is so beautiful!
—Yes. What's more, _ _____ we live there is fresh air there is no in town.
| A．that | B．whether | C．where | D．when |
--- It’s thirty years since we last met.
--- But I still remember the story, believe it or not, _________we got lost on a rainy night.
| A．which | B．that | C．what | D．When |
_______makes this shop different is that it offers more personal services.
| A．What | B．Who | C．Whatever | D．Whoever |
We haven't settled the question of ______________ it is necessary for him to study abroad.
| A．if | B．where | C．whether | D．that |