1.Since the beginning of 2013, these regulations _____ in most workplaces across the country. (2016-12)

A. will be introduced
B. have been introduced
C. are introduced
D. were introduced

The traffic was making so much noise that I couldn’t hear what he______. (2017-06)

A. is saying
B. was saying
C. has said
D. will say

I am interested in the training course, which__________at Hilton Hotel in Beijing from March 8 to 12, 2018. (2017-12)

A. held
B. was held
C. will hold
D. will be held

After the bargaining progress _____, a final agreement was signed. (2018-12)

A. is completed
B. had been completed
C. has completed
D. had completed

If people don’t like ____ by titles, you can ask them how they prefer to be addressed. (2018-12)

A. are called
B. being called
C. be called
D. called

The training course ______ to introduce you to the security check at the Airport. (2019-06)

A. designs
B. be designed
C. designed
D. is designed

It has been quite some time since we _______ you at your office in Beijing. (2019-06)

A. visit
B. visited
C. have visited
D. had visited

Our clients (surprise)_____________ by the level of support we can offer in such an efficient way. (2016-12)

When they entered the area, the visitors (require)_____________to turn off their smart phones. (2017-12)

Training new staff should ( conduct)_____________ as soon as possible after they are hired. (2018-06)