The telephone _____ three times in the last hour, and each time it _____ for my sister.
| A．had rung; was | B．has rung; was | C．rang; has been | D．has been ringing; is |
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 |
Crusoe ___ a boat, but he failed.
| A．meant to build | B．meant building | C．had meant to build | D．had meant building |