One of the toughest jobs of managers and executives is_____ how to engage their employees.

A. to figure out
B. to be figuring out
C. figure out
D. figured out

They are invented to be very smart, robots still can’t _____replace humans.

A. If only
B. Eventhough
C. As if
D. Just as

This passport photo doesn’t look like you at all, so you must have another one ______.

A. taking
B. to take
C. taken
D. took

The search will go on______a new and better material is found to replace this one.

A. since
B. until
C. while
D. as

1.The president will attend the opening ceremony of the (establish)___________of the free trade zone this afternoon.2. Total sales of our company in 2015 rose to 712. 6 million Euros (compare)_______ with 687.2 million Euros in 2014.3. With the work (do)_________ , these scientists began to plan another research project.4. Consumers have the right (obtain) _________ true information of the services they receive from the sellers.5. Many employers complain that they have difficulty (find) _____ enough qualified people for their companies.

Young people are sharing more information about themselves on social media sites now than they ______ in the past.

A. was
B. are
C. do
D. did