—_________ on historical facts, it's well worth reading.
| A．To base | B．Having based |
| C．Basing | D．Based |
---May I use your cellphone?
---_____. We are good freinds
| A．No trouble at all. | B．Of course you may |
| C．You are welcome | D．It all depends |
_____his leg wounded accidentally, he still came to the meeting on time.
| A．In spite of | B．Because of | C．But for | D．Due to |
How I wish I ____ the mistake! Everybody present was angry with me.
| A．didn’t make | B．hadn’t made | C．wouldn’t make | D．wasn’t making |
I could have called you for help, but I ____ your number.
| A．couldn’t remember | B．didn’t remember |
| C．should have remembered | D．hadn’t remembered |
He wasted a lot of time playing football, otherwise he ________the exam.
| A．had passed | B．passed | C．would passed | D．would have passed |