—It’s a long time________I saw you last.
—Yes，and what a pity it is now that it will be a long time________we see each other again.
| A．before；since | B．since；when | C．since；before | D．when；before |
He ________ to us that he ________ the watch on the table.
| A．lied; lay | B．lay; laid | C．lied; had laid | D．lay; had laid |
Great changes _________ in my hometown in the past 20 years.
| A．took the place | B．have taken place | C．were taken place | D．took place |
His generosity _______ him the reputation of “The most generous man” in his area.
| A．made | B．earned | C．achieved | D．gave |
It has been announced that candidates _______ remain in their seats until all the papers have been collected.
| A．can | B．may | C．will | D．shall |
_______in the ocean, it becomes powerless once it is on the beach.
| A．However a whale is powerful | B．However powerful a whale is |
| C．Whatever a powerful whale is | D．Whatever powerful a whale is |