A.stay | B.staying | C.to stay | D.if staying |
A.taught | B.teaches | C.teaching | D.to teach |
A.be3ing scolded | B.scolding | C.scold | D.to be scolded |
A.could help | B.could helping | C.could to help | D.might help |
A.opened | B.having been opened | C.being opened | D.to be opened |
A.to eat | B.eating at | C.to eat at | D.for eating |
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