每句一错。
1.I used【to go down(A)】to the bank of the stream and【chose(B)】little【flattened(C)】stones to throw across the water, which moved【as swiftly(D)】as swallows.
7.He can’t tell the difference between【true(A)】praise and 【flattering(B)】 statements 【making(C)】only to【gain(D)】his favor.
8.They want to expose those【educational(A)】disadvantaged students to creative ,【enriching(B)】educational【experiences(C)】【for a five-year (D)】period.
9.The changes that 【took(A)】place in air 【during(B)】last sixty years 【would have seemed(C)】completely impossible to even the most brilliant scientists【at(D)】the turn of 19th century.
10.I don’t think【it (A)】advisable that he【will be assigned(B)】to the job since he has【no(C)】experience【whatsoever(D)】.