The boy used to cause a lot of _________/’tr?bl / very much.

I _____ this book for two weeks. I have to return it now.

These Maths problems are too hard to ______. Can you help me?—There are many ways, but the most important is to try your best.

Mary has lots of friends here.—Yes. Because she is ___ honest girl.

Lily and Amy often leave _____ school_____half past seven.[ ]