---I fell off my bicycle and broke my leg yesterday．
---Is that ____ you drank too much？
| A．why | B．how | C．because | D．when |
Can you remember the amazing scene _______ the heroine finally became a butterfly?
| A．which | B．how |
| C．when | D．where |
Land animals are believed ______ from sea animals.
| A．to develop | B．developing |
| C．developed | D．to have developed |
When the iPhone first the market, only die-hard Apple fans bought it. But today, iPhones are everywhere.
| A．hit | B．led |
| C．made | D．covered |
_______ the news that she didn’t pass the job interview, tears came into her eyes.
| A．After hearing | B．On hearing |
| C．Heard | D．When she heard |
—How do you find our campus?
—Impressive! I like the small lake best, around which _____ lines of tall trees.
| A．are standing | B．does stand |
| C．stand | D．is standing |