There is no way of knowing why one man makes an important discovery ________ another man, also smart, fails.
A.since B.while C.as D.if
— There is something wrong with my new shower. I’ll return it to the shop tomorrow.
—How come? Are you sure you put it in __________?
A.carefully B.peacefully C.wisely D.properly
—The frozen yogurt (酸奶) tastes like ice cream but has_______ of the fat.
—It suits me fine. I'm losing weight.
A.none B.neither C.no D.some
Many companies try to get into the market by offering _______ rewards to their customers.
A.peaceful B.primary C.generous D.general
It was a real race time to get the project done. Luckily, we made it.
A.over B.against C.for D.by
—___________ will the project of Wuxi Metro Line 3 be completed?
—It won't take long. Just in about three months.
A.How long B.How far C.How soon D.How often
