Sam is doing some___________ on the ancient Silk Road.

A.operations B.experiments C.research

If you________ your country and people， it means you just work for them.

A.obey B.act C.research

The old man would rather_______money to charities than_________ himself expensive things.

A.to donate； buy B.donate； buy C.donating buying

This is one of the best films__________.

A.that have been shown this year B.that has been shown this year

C.which have been shown this year D.which has been shown this year

I can never forget the day_________ we worked together and the day______ we spent together.

A.when: which B.which: when C.what: that D.on which: when

----Is the woman___________ walked past just now your teacher？

----Yes. She teaches_____________ English.

A.that; our B.who; us C.which; us D.who; our

---Have you ever__________ Xiangyang？

----Yes. It is an ancient city_______ has more than 2800 years’ history.

A.gone to； which B.been in； that C.been to； it D.been to； which

Lily doesn’t know ________ she and her friends can do to help the little boy ________ parents have left their hometown for making money.

A.that; whose B.how; who C.what; who D.what; whose

This is the house_______ our beloved Premier Zhou once lived and worked.

A.which B.that C.when D.where

---congratulations_________ you_______ your success.

----Thank you. We will celebrate_________ it_______ holding a party.

A.to； for； on； by B.to； on； /； by C./； on: to； for D./； on； for； by