Humble （ ） it may be, there is no place like home.

Harmonious marriage, however, does not necessarily （ ） much sharing of interests and responsibilities.

They were talking （ ） while preparing dinner.

It is reported that a plane has ______ in the mountainous area near the borderline of that country.

_____, the professor is still trying to learn a new language.

I am sorry that he （ ） in such poor health.

If the wounded soldier had been given first_____, he would not have died.

The defense computers calculate way to （ ） the enemy missiles.

Her sister always spends so much _____ her clothes that she can’t manage to live with her salary.

We consider_____the instrument be adjusted each time it is use

Mr. Green said his clients _____ our samples by the end of last month.

I must tell you how _____ a letter from you.