You look so tired tonight.It’s time you ___.A. go to sleep B;. went to sleepy C. go to bed D. went to bed
You can’t imagine ________ when they received these nice Christmas presents.
No one can be sure _______ in a million years.
________ the decision must be made immediately requires questioning.
_______caused the accident is still a complete mystery.
________ we can’t get seems better than _______ we have.