This is the first time that I        it.

— Why haven’t you asked her to come here?
— She _______ an important experiment when I found her and she _______ it.

_______ good use of learning resources such as the website and library, and you will make great progress.

How long do you think ____ the car factory launches a new model?

I used to go camping a lot, so it isn’t the first time I ____in a tent.

I had just got up and was about to cook my breakfast ___the telephone rang loudly, but it hung up __I could answer it .

____the book if you are free, and you will learn a lot about how to study English .

—Are you going there with us?
—If Mary wants to go, ______.

It was the first time that little Tony ____ a speech in front of so many people.

The boy is very brave. I         he         the tall tree.