---- What do you think of zoology?
---- In my opinion, zoology is ______ botany.
| A．a subject so interesting as | B．as a interesting subject as |
| C．as interesting a subject as | D．interesting as a subject as |
—Is there anything wrong, Bob? You look sad.
—Oh, nothing much. In fact, I __________ of my friends back home.
| A．have just thought | B．was just thinking |
| C．would just think | D．will just be thinking |
The flowers were so lovely that they __________ in no time.
| A．sold | B．had been sold |
| C．were sold | D．would sell |
—Have you known Dr. Jackson for a long time?
—Yes, since she _________ the Chinese Society.
| A．has joined | B．joins |
| C．had joined | D．joined |
—Have you got any job offers?
—No. I _________.
| A．waited | B．had been waiting |
| C．have waited | D．am waiting |
We first met on a train in 2000. We both felt immediately that we _________ each other for years.
| A．knew | B．have known |
| C．had known | D．know |