It has come to my notice _______ some of you have missed classes.
| A．what | B．which |
| C．that | D．when |
—Did you enjoy your tour around Beijing， Mr Singh？
—Yes. But I hate when the tour guide held out his left hand to shake hands with me.
| A． one | B．that | C．it | D．this |
Thanks to the work of UNICEF(联合国儿童基金会). Otherwise many children the chance of living a good life.
| A．will not have | B．have not had | C．do not have | D．would not have |
My friend Jack was the first person I knew ______an iPhone 5S.
| A．using | B．to use | C．used | D．having used |
They hope to turn our society into one ______ those in need can get help.
| A．where | B．which | C．when | D．who |
I believe that human cloning is wrong. If we toy with nature, we will have to deal with the _______.
| A．concepts | B．conflicts | C．consequences | D．credits |