Question 29. Anita is studying Maths at school at the moment. (Change the sentence into passive voice). ............ Question 30. John spent 2 hours finishing his project on environment. → It took................. Question 31. My father didn't want to continue watching the show. It was more and more boring later. (using a conjunction to combine two sentences) .............. Question 32. My parents allowed my sister to go camping with her friends in the mountain. → My parents let...........

`29` Maths is being studied by Anita at the moment.

`-` Bị động HTTD.

`->` Form : S(bị động) + is/am/are + being + V3 + O.

`30` It took John `2` hours to finish his project on environment.

`-` Cấu trúc biến đổi giữa ''take'' và ''spend'' :

`<=>` It + take + O(người) + time + to V + O : Nó tốn ai đó bao lâu để làm gì .

`<=>` S(người) + spend + time + V-ing + O : Ai đó dành bao lâu thời gian làm gì .

`31` My father didn't want to continue watching the show because it was more and more boring later.

`-` Mệnh đề lí do.

`@` Clause `1` + because/since/as + clause `2`.

`32` My parents let my sister go camping with her friends in the mountain.

`-` allow sb to do sth `=` let sb do sth : cho phép ai làm gì.