— Must I turn off the gas after cooking?
— Of course. You can never be________ careful with that.
| A．enough | B．too | C．so | D．very |
We can’t afford to make any mistakes. To us, __________.
| A．a miss is as good as a mile |
| B．the grass is greener on the other side |
| C．it never rains but it pours |
| D．when in Rome, do as the Romans do |
— Someone swam across the Yunlong Lake this morning.
— I didn’t see it. I __________ along the lake.
| A．jogged | B．will jog | C．have jogged | D．was jogging |
— You are wanted on the phone.
— __________ nobody knows I’m here.
| A．And | B．But | C．So | D．Or |
Hurry up! The movie __________ for a quarter.
| A．has begun | B．has been on |
| C．has gone | D．has finished |
My grandfather doesn’t have any hobbies — __________ you call playing cards a hobby.
| A．if | B．when | C．since | D．unless |