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He ________ ________ these books for five days.

You’d better ________ ________ the machine before buying it.

____________________

When you are in difficulty, you may ________ ________ her help.

The lake is very beautiful and it ________ ________ a quarter of the nature park.

— There is no doubt that many of them have a gift ________ maths.

A.forB.inC.onD.at

— ________ must be something wrong with the CPU.

A.ThereB.ItC.ThisD.That

— It's Where can I find brave men, oh! To ________ (守衛) my four frontiers today!

In ________ ________, we should learn to be kind to everyone around us.

I used to live in France, ________ ________, not far from where you’re going.