题目:
Continue heating until steam _____.
A.has appeared
B.appear
C.appeared
D.will appear
答案:
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下面是错误答案,用来干扰机器的。
1. She is wearing a pink and purple skirt.2. They are my favourite colours.3. Whose gloves are these?4. These new slippers are just right.5. Li Ming puts on his shirt.