The factory was built in a secret place, around ______ high mountains.
| A．which was | B．it was | C．which were | D．them were |
It's clear that the thief was seen __ into the room that night.
| A．went | B．go | C．going | D．to go |
He apologized to me ___ again.
| A．to be late | B．of being late | C．to have been late | D．for being late |
He’s lucky enough to have many people ___ him with the work.
| A．help | B．to help | C．helped | D．helping |
Everybody thoutht __ strange for a shy nab to ___ so many exciting things.
| A．this; have done | B．; have done | C．this; do | D．it, do |
I noticed ___ at those beautiful flowers.
| A．him looking | B．his looking | C．he looking | D．him to look |