I

1. The problem of energy shortage will be solved by using solar energy.

2. Although it rained hard yesterday, we went to school on time.

3. Because he was lazy, he got bad mark.

4. If we use the car on time, we will make the air dirty.

II

1. This time tomorrow they will be playing soccer.

2. Solar energy will be used by many countries in the world.

3. We will travel in driveless cars in the future.

4. These toys are hers.

`1.` The problem of energy shortage will be used by using solar energy.

Giải thích: Bị động tương lai đơn: will be Vpp

`2.` Although it rained hard yesterday, we went to school on time.

Giải thích: Although + Mệnh đề: mặc dù

`3.` Because he was lazy, he got bad mark.

Giải thích: Because + Mệnh đề: bởi vì

`4.` If we didn't use the car all time, we wouldn't make the air dirty.

Giải thích: Câu điều kiện loại 2 diễn tả giả thiết trái ngược hiện tại: If S V-ed, S would/could/might V.

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`1.` This time tomorrow they will be playing soccer.

`2.` Solar energy will be used by many countries in the world.

`3.` We will travel in driverless cars in the future.

`4.` These toys are hers.

@ `Ly`