12. ----Did Jack take the doctor’s advice that he _____ in bed for a couple of days?----If only he _______.
To keep ______, we must do more out-of-door exercises.
Thank you for_______ my trouble.
It is worth considering what makes “convenience” foods so popular, and ____ better ones of your own.
I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian get back.
If you really have to leave during the meeting, you'd better leavethe back door.