She can do it because she knows the system inside out.

A. Dan left right after to see all the paintings.

B. Dan left all the paintings after seeing them.

C. Right after seeing all the paintings, he left

D. He left and then saw the paintings right after.

A. The food price will be the same until the end of this month

B. The food price of this month will be equal to the one of next month.

C. There will be no same food price from now till next month.

D. There will be two different food prices next month.

A. Although the burden on each member will be more tolerable, we still need to share the tasks.

B. We need to share the tasks so the burden on each member will be more tolerable

C. Unless we share the tasks, the burden on each member will be more tolerable.

D. It is essential to share the tasks, otherwise, the burden on each member will be more tolerable.

A. I am surprised by this

B. I was surprised by this.

C. I will be surprised by this.

D. I would have been surprised by this.

A. The assignment should be done by the students.

B. The assignment should had been done by the students.

C. The assignment should have been did by the students.

D. The assignment should have been done by the students

A. Does anyone know if it is deserving to have this sculpture?

B. Does anyone know whether someone should own this sculpture today?

C. Does anyone know if today this sculpture is valuable or not?

D. Does anyone know how much this sculpture cost?