1. In case it rains, you'd better bring a raincoat
in case : trong trường hợp
2. Why don't we visit the museum next Sunday
Why don't we + Vnt?
3. He is not tall enough to reach the top shelf
S tobe(not) adj enough to Vnt
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1. B who thay thế tân ngữ
2. C tuy nhiên
3. B S must be VPII by O
4. D had tried
5. D had known