As an engineer， you can't be careful． You should pay attention to every detail．（ ）
A．veryB．tooC．soD．quite
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．
I called you at last night，but you didn't pick up．
Oh I ______ "HuanlesongⅡ"，at home that，that time．（ ）
A．watchedB．am watching
C．was watchingD．watch