He has made some spelling mistakes in the paper; ______, they are not serious.
| A．but | B．therefore | C．even if | D．however |
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 |
The sun shines brightly in the sky______ us light and heat.
| A．that give | B．having given | C．to give | D．giving |