Twenty million years ago, Idoho was not the dry place as it is now. ______, it was warm and damp, covered with thick forests.
| A．Thus | B．Besides | C．Rather | D．Otherwise |
The researchers have discovered __________they believe to be a new species.
| A．which | B．who | C．where | D．what |
The books sold ________millions in one day, and the publisher had to print another ten thousand copies.
| A．with | B．in | C．for | D．at |
--I think we are lost. I’ve no idea where we are.
--I wish we __________the map with us.
| A．bring | B．would bring |
| C．have brought | D．had brought |
The professor can answer almost any question __________we have about any history topic.
| A．as | B．that | C．why | D．where |
Due to the light pollution, stars are too faint _________with naked eyes in the urban area.
| A．observing | B．being observed |
| C．to be observed | D．to be observing |