— I phoned you at seven last night, but nobody answered.
— Oh, I ______ some shopping in the supermarket.
| A．do | B．did |
| C．was doing | D．have done |
______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
| A．To attach | B．Attach | C．Attached | D．Having attached |
--Who is to give us the lecture today?
---The lady _____ our headmaster into the hall.
| A．follows | B．following | C．followed | D．to be followed |
We are working to raise money for the local homeless shelters. _______ , we are collecting clothing to offer those in need.
| A．For one thing | B．Moreover | C．As a result | D．In the end |
The __________ conclusion is not a set one. It still needs further testing.
| A．tentative | B．basic | C．bare | D．systematic |
People are _________the use of alternative energy sources. Because the fossil fuels _________will be used sooner or later.
| A．pushing for/ consumed | B．struggling for /being consumed |
| C．pushing for/ being consumed | D．preferring /being used |