--- I ______ so busily recently that I ______ no time to help you with your math.
--- That’s OK. I can manage it by myself.
| A．have been working; have |
| B．have worked; had |
| C．am working; will have |
| D．had been working; had had |
It took building supplies to construct these energy-saving houses. It took brains, too.
| A．other than | B．more than | C．rather than | D．less than |
The work was difficult, but Tom’s expression showed that he would finish it in time.
| A．stubborn | B．determined | C．concerned | D．surprised |
Every evening after dinner, if not from work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
—I’m sorry. I at you at the other day.
— Forget it. I was a bit out of control myself.
| A．shouldn’t shout | B．shouldn’t have shouted |
| C．mustn’t shout | D．mustn’t have shouted |
Hi, as I soon for Nicaragua to do some research, I would love to hear your suggestions.
| A．am leaving | B．am left | C．was leaving | D．was left |