—Could I smoke here?
—I’d prefer _______if you don’t smoke in front of the children.
| A．that | B．this | C．it | D．you |
Not having found __________，he had to go home with empty hands．
| A．something | B．everything | C．anything | D．nothing |
At the top of the mountain，__________ to see the blue sky，the kids made cheerful noises of all kinds．
| A．delighted | B．delighting | C．having delighted | D．delight |
Parents are advised to put books __________ they are easily accessible to children .
| A．which | B．where | C．in which | D．who |
Since 2012，when he __________，the soldier has been in the army．
| A．had married | B．has married |
| C．got married | D．is married |
He told me his story in private，__________ nobody else knew what had happened to him．
| A．but | B．so | C．while | D．or |