七年级英语连词成句

【解答】前面几位网友答案都有一部分错误，因此改正如下：
1 There is a pine tree in front of our school.

2 Do you know the major parts of the machine？

3 Doctors are fighting against the heart disease.

4 Sam is talking to his uncle on the phone.

5 Don't look around when you have class.或者
When you have class，don't look around,

our school is in front of a pine tree、
do you know the part of the machine major of？
doctors are fighting against the heart disease、
Sam is talking to his uncle on the phone
when class aroud ，you don‘t have look

There is a pine in front of our school.
Do you know the major parts of the machine.
Doctors are fighting against the disease.
The sam is talking to his uncle on phone.
Don't look around, when you have class.

our school is in front of a pine、