______ is even more important is that the earth cooled down, water began to appear on its surface.
|
A．When |
B．That |
C．Which |
D．What |
Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.
七彩教育网
|
A．had studied |
B．studied |
C．studies |
D．has studied |
It is so wet there _____ the trees are extremely tall, some measuring over 90 meters.
|
A．what |
B．which |
C．that |
D．why |
Many _______ of years later, the first extremely small plants began to appear on the surface of the water.
|
A．millions |
B．million |
C．million of |
D．millions of |
_______ Jane’s way of studying chimps, our group are all going to visit them in the forest.
|
A．Follow |
B．Following |
C．Followed |
D．To follow |
Jane warns us that our group is going to be very tired and dirty by the afternoon and she is right. However, the evening makes it all ______.
A. favorable B. worthwhile C. precious D essential
