Viết lại câu bằng cách thay đổi trật từ của các mệnh đề và sử dụng dấu phẩy khi cần. (Rewrite the sentences by changing the order of the clauses and using a comma as needed.)

John tried hard to get excellent marks although it seemed a difficult exam.

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As soon as we finish making the conical hats, we will deliver them to our customers.

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I performed poorly on the tests until I started doing homework regularly.

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Mary went to the movies with friends even though she had a thirty-row poem to learn by heart.

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Before my father became a famous artisan, he was a normal worker.

Kelvin will study abroad after he graduates from high school this year.

You must drive on the right when you drive on the road.

Before I invited my friends for milk tea, I checked my money.

Because her phone’s battery was empty, she was unable to make a call.

Unless the rain stops, we won’t be able to play football.

Nối hai câu lại với nhau dùng từ đã cho trong ngoặc. (Combine each pair of sentences using the word in brackets.)

We went to the zoo. My friends wanted to see the animals. (because)

I went to the dentist. My tooth broke. (after)

Thomas will receive a certificate. He has bad marks. (unless)

We will go out to eat. It is my birthday. (since)

Jane will feed the dog. She finishes her chores. (after)

I hate to drink coffee. It always upsets my stomach. (because)

Mum came back home to prepare dinner. She went to the grocery store. (after)

You should review your lesson. You have the assignment. (before)

My dog waited at the door for US. We got home. (until)

You study for the test carefully. You will do it much better. (if)