题目内容

Those who ____ in ____compositions, please hand them in this afternoon.

A. hasn't handed;his
B. haven't handed;their
C. has handed;their
D. have handed;his

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Jane is one of the best students in her class who _____by their teacher.

A. are praised
B. is praised
C. praised
D. praising

The whole class _____the teacher attentively.

A. are listening to
B. is listening to
C. are listening
D. has listened

This is an illness that can result in total blindness if _____untreated.

A. left
B. being left
C. is left
D. it left

A reagent is any chemical that reacts in a predictable way _______withother chemicals.

A. when mixed
B. when is mixed
C. it mixed
D. when mixing

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