---Is this book Betty's? ----Yes , it's ________.
| A．mine | B．his | C．hers | D．yours |
- Mom, can I go swimming with Tommy?
- I'm afraid not, dear. You're_______ to go without adults.
| A．old enough | B．enough old |
| C．not old enough | D．not enough old |
The phone rang just_______ he walked out of the shower.
| A．while | B．when |
| C．since | D．as |
Talk to them in a nice way. But if they still refuse_______, call the police.
| A．to leave | B．leaving |
| C．leave | D．left |
- Did the teacher tell us_______ to the station? - Yes. She said we should meet there at ten.
| A．how to get | B．what to get |
| C．when to get | D．where to get |
Jo likes summer the_______ because she has serious problems sleeping in the summer heat.
| A．last | B．least | C．best | D．first |