What does the word it in paragraph 3 refer to?

Water consists_____ oxygen and hydrogen.

Chọn từ thích hợp điền vào chỗ trống:

Keep quiet. You _______ talk so loudly in here. Everybody is working.

Choose the best answer A, B, C or D to complete the sentences.

Let's have our waiter ____ some coffee.

A: What are you doing?

B: We are getting ready. We………….. our uncle in hospital.

A: Really? Give him my regards

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

It is necessary that the problem _______solved right away.

Each of the following sentences has one error (A, B, C, or D). Find it and blacken your choice on your answer sheet.

The price of gold depends on several factor, including supply and demand in relation to the value of the dollar.

Each of the following sentences has one error (A, B, C, or D). Find it and blacken your choice on your answer sheet.

They hardly never go to the beach because of their thickness, do they?