If you will buy one box at the regular price, you would receive another one at no extra cost.()

单项选择题(Although) (both of) them are trying (to get) the scholarship, she has the (highest) grades. ()

A. Although
B. both of
C. to get
D. highest

单项选择题(Every now and then) he (would come) here (paying a visit to) his old aunt, who lived (all alone) in a small house.()

A. Every now and then
B. would come
C. paying a visit to
D. all alone