—Dad, shall we go to the World Park tomorrow?—Sorry. I won’t be free, but you ______ ask Mum to go with you.
—What happened ________Sarah? —She failed in the English test.
Several ________ students came to the meeting.
This book is ________for a six-year-old child to read.
The window was broken. Try to ________who has broken it.
Don’t forget to turn ________the lights when you leave the office.