21.The Campbells _______ sometimes invite us over for the weekend when we lived in the same
neighborhood.
A. should B. must C. might D. would
22. —Jim, what’s the result of the final?
—Believe it or not, China _______ beat its strong opponent France.
A. narrowly B. casually C. manually D. typically
23. As Zhong Nanshan puts it, a surgical mask is enough _______ one uses it for daily protection.
A. unless B. before C. if D. since
24. It’s said that the president’s absence has _______ wide concerns and guesses.
A. caught up on B. stood up for C. given rise to D. held on to
