This year is_____70th anniversary（周年）of the founding of the People's Republic of China.（ ）
A．aB．anC．the
Summer vacation is coming!Could you tell me ______？
Xi'an．I really want to visit Terracotta Army．（ ）
A．where are you goingB．what are you doing
C．where you are goingD．what you are doing．
Have you heard of Hansel and Gretel？
Yes，Hansel is a smart boy ______ often come up with a good idea．（ ）
A．whoB．whomC．whereD．which
Last month，China host BRF for International Cooperation （一带一路高峰会议）successfully．
Yes，thousands of foreign guests ______ to the meeting．（ ）
A．invitedB．are invited
C．were invitedD．will invited
Nowadays lots of products from China are very popular in the world．
Yeah! Many people can hardly avoid ______ products made in China．（ ）
A．to buyB．buyingC．boughtD．buy
Can you tell me how long you ______ the Huawei mobile phone，Mr．Zhang．
Nearly a year．It works very well．（ ）
A．will buyB．have had
C．have boughtD．had had．