Today there are more airplanesmore people than ever before in the skies.
| A． | carry | B． | carrying | C． | carried | D． | to be carrying |
When ______ by the teachers, a student tends to study harder than usual.
| A．to be praised | B．praising | C．praised | D．to praise |
Her little son fell off the boat into the water due to her carelessness. The mother couldn’t help _____because she couldn’t help _____ her son out of the danger.
| A．crying; to save | B．crying; saving |
| C．to cry; to save | D．cry; saving |
He pretended _______ a book when his mother entered the room.
| A．to read | B．to have read | C．reading | D．to be reading |
The production of the factory has grown to _____ in 1999.
| A．twice as it was | B．twice what it was |
| C．as twice as it was | D．twice that it was |
What troubled the teacher was that no one present made an answer when asked who had broken the glasses, so he didn’t know who _____________.
| A．was blamed | B．was to be blamed | C．was to blame | D．would be blamed |