Giúp mình với mình cần gấp

`Đáp` `án:`

75. Phone me immediately as soon as you arrive at the conference.

Clause + as soon as +clause; ngay khi 

76. Do you know whose pen it is?

Whose + N + be + S? sở hữu

77. In spite of the rain, we went camping. 

In spite of + N/Np/Ving, clause: mặc dù 

78. If I had had time, I could have seen you.

If 3: If + S + had + V3/ed, S +  would / could + have + V3/ed 

79. The picnic was led because of the rain. 

Clause + because of + N/Np/Ving: bởi vì 

80. They put the fence there so you can't enter the grounds of the house. 

Clause + so + clause: vì vậy