It sounds like something is wrong with the car’s engine. , we’d better take it to the garage immediately.
| A．Otherwise | B．If not | C．But for that | D．If so |
Don’t defend him any more. It’s obvious that he _____ destroyed the fence of the garden even without an apology.
| A．accidentally | B．carelessly |
| C．deliberately | D．automatically |
The engineer buries himself in work all day long and has no time for some outdoor activities, __________ he has the interest.
| A．as if | B．even if |
| C．so long as | D．now that |
Can you write about a challenging situation ______ you once faced in your life and how you dealt with it?
| A．where | B．when | C．which | D．there |
I’m always ________ about what I say because careless remarks are likely to hurt others’ feelings.
| A．enthusiastic | B．curious |
| C．doubtful | D．cautious |
Evidence has been found through years of study __________ children’s early sleeping problems are likely to continue when they grow up.
| A．why | B．how | C．that | D．whether |