“What is it?” – “We don’t know until _____ at it under a microscope.”
Đáp án D
Sử dụng thì HTHT để nói về một hành động xảy ra trong quá khứ, kết quả có liên quan đến hiện tại
Sau ‘until’ (mệnh đề chỉ thời gian) không dùng động từ chia ở thì tương lai
Tạm dịch: Cái gì kia?/Chúng tôi không biết mãi cho đến khi chúng tôi nhìn nó dưới kinh hiển vi
Smoking is extremely detrimental to health, _____ many people continue to smoke anyway.
Many years ago, black children were _____________ to discrimination in many schools.
The authorities recommend that the meeting _____________ next Monday.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
We decided to spend ______ summer in ______ seaside town.
As a small boy, he used to _______ alone in the house for an hour or two.
Her husband is very kind. He always cares _____ her and never puts all of the housework her.
One member of the project group_______the boss and was fired immediately.
The archaeological excavation _____ to the discovery of the ancient city lasted several years.