If Peter had given up his part-time job, he （ ） the final exam.

He works too hard.That’s _____ is wrong with him.

If you suspect that illness might be serious，you should not （ ） going to the doctor.

These tickets for the performance are （ ） until the end of the month．

The degree （ ） you maintain your mental health may depend on certain simple environmental factors.

Today, household chores have been made much easier by electrical （ ）.

Don’t let the child play with scissors （ ） he cuts himself.

When I go out in the daytime I use the bike _____ the car if I can.

（ ） you do, you should put your heart into it.

At the 60th anniversary, the guests sitting in the front are those ______ graduates from the university.

—Do you like the material? —Yes, it （ ） very soft.

Our main concern is to _____ the living standard of the people.