单项选择题
A. might as well leave
B. had better to leave
C. ought to have leave
D. should have to leave
单项选择题 Are the terms "pure" and "applied" two totally different activities, having little or no interconnection, as （）often implied
单项选择题 A friend of mine returned to his house after a holiday only to find it （） broken into.
单项选择题 Human skin is very thin on the eyelid and quite thick on the（）of the foot.