20. When Jane began to take swimming lessons, her main__________was the fear of water.
| A．evidence | B．crisis | C．obstacle | D．Danger |
The boy pretended ______ his homework, when his parents came back home.
| A．to do | B．do | C．doing | D．to be doing |
They need twenty more workers ______ their group to do the job..
| A．except | B．but | C．beside | D．besides |
In the cinema, there was an old man______ beside me.
| A．at | B．sit | C．sitting | D．to sit |
He gets up early and reads English aloud, ___ he has greatly improved his English.
| A．on the way | B．by the way |
| C．in this way | D．in this means |
It’s the fifth time ______ late this term.
| A．that you ’ve arrived | B．that you arrived |
| C．when you ’ve arrived | D．when you arrived |