The Nuclear Security Summit is an initiative of Mr. Obama, considers nuclear terrorism to be one of the greatest threats to international security．
| A．which | B．what | C．who | D．Whom |
---It looks heavy. Can I give you a hand?
---_______.
| A．No, thanks | B．Yes, my pleasure | C．No, never mind | D．Yes, I do |
— Foreign trade has been developing very fast in Guangdong.
— Yes. Guangdong is China’s largest province ___ foreign trade volume.
| A．in terms of | B．in place of | C．in charge of | D．in favor of |
Last Sunday, I went shopping for the perfect dress, ______ would make me look younger.
| A．one in which | B．the one in which | C．one that | D．the one that |
In an experiment, pet owners are being encouraged to take their pets to work, a move _______ can be good for both the people and the pets.
| A．that some scientists say | B．in which some scientists say |
| C．some scientists say that | D．some scientists say |
They will fly to Washington,they plan to stay for two or three days.
| A． | where | B． | there | C． | which | D． | when |