7Challenge 1第7题答案
8Challenge 1第8题答案
9Challenge 1第9题答案
am;are;is;is;are
10Challenge 1第10题答案
(1)He is hard-working
(2)funng
(3)helpful and shy
(4)kind
11Challenge 1第11题答案
(1)English
(2)3
(3)Monday;Wednesday
(4)Friday