Richard 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
Richard 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
B
考查省略句。Only too---to表肯定。If evere如果曾有过。句意；Rishard非常乐于助人，如果曾有过的话，也是极少拒绝别人的求助。