It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
| A．which, that | B．that, where |
| C．where, that | D．which, where |
_____ me, and then try to copy what I do.
| A．Watch | B．Watching |
| C．To watch | D．Have watching |
_____ the milk and set a good example to the other children.
| A．Drink | B．To drink |
| C．Drinking | D．Having drinking |
_______ to the top of the hill, and you can see the whole of the town.
| A．Get | B．To get |
| C．Getting | D．Having got |
Everyone in our class was working hard and doing what we could _______ a good college.
| A．enter | B．to enter |
| C．entering | D．entered |
He ran as fast as he could _____ to catch the early bus.
| A．to hope | B．hope |
| C．hoping | D．hoped |