His mother looked very tired，for she _____ the house herself all day.

Having worked for as long as ten hours, the young man lay on the ground, _____.

My decision _____ to be a good one .

You may keep the book for one more week_____ no one else needs it.

Unfortunately, their car _____ in the mud after the heavy rain.

We can’t ____ the punctual arrival of trains in foggy weather.

This test ____ a number of multiple-choice questions.

He soon made _____ clear why he had asked for a conference.

There is no doubt _____ he will finish the task in time.

My brother is honest. He _____ such a thing.