Question

1.It's possible that it's correct

-->That......................................................

2.It's impossible to travel to Russia without visa.

--->You can't travel to Russia if........................................

3.I wasn't able to phone her because I didn't know her phone number

-->If...................................................

4.You don't do any exerciese and that's why you put on weight.

--->If..............................................................

Answer 1

1.It's possible that it's correct

-->That is possible that it's correct

2.It's impossible to travel to Russia without visa.

--->You can't travel to Russia if you don't have a visa

3.I wasn't able to phone her because I didn't know her phone number

-->If I had known her phone number, I would have phoned her

4.You don't do any exerciese and that's why you put on weight.

--->If did exercise, you wouldn't put on weight

Answer 2

1.It's possible that it's correct

-->That it's correct is possible.

That +clause : a noun clause: mệnh đề danh từ có thể đóng vai trò như chủ ngữ (subject)

2.It's impossible to travel to Russia without visa.

--->You can't travel to Russia if you don't have a visa.

3.I wasn't able to phone her because I didn't know her phone number

-->If I had known her phone number, I would have phoned her

4.You don't do any exerciese and that's why you put on weight.

--->If you did exercise, you wouldn't put on weight