摘要： Don’t forget to check your homework Keys: Section A 1 receive 2 perfect 3 camp 4 dialog 5 explored 6 was busy doing 7 preparing for 8 on vacation 9 am looking forward to 10 camping 11 ADE 12 ADB 13 AD 14 ACDE 15 AD Section B 1 face 2 north 3 beginning 4 to 5 emperor 6 at the foot of 7 spread over 8 both sides of the road 9 in the old days 10 make sure 11 beginning 12 sides 13 days 14 seeing 15 to learn Section C 1 notice 2 frightened 3 direction 4 step 5 camera 6 three and a half years(three years and a half )7 arrived at 8 is full of 9 are surprised at 10 didn’t---until 11 in.to 12 to 13 at 14 of 15 at 16 up 17 over 18 at 19 through 20 for Section D 1 Check 2 common 3 along 4 mistakes 5 special 6 shout at 7 decided to 8 had fun 9 paid for 10 arrived at 11 when it began to rain 12 as soon as he heard the ring. 13 after she finished her homework 14 until he saw 15 before you hand it in

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