The oak tree was covered with yellow handkerchiefs -- 20 of them, 30 of them,maybe hundreds, a tree that stood like a banner of welcome ______in the wind. A: billowed B: is billowing C: billowing D: billows

__________ in Athens was considered sacred. A: Pine tree B: Olive tree C: Willow tree D: Cypress tree

Which of the following plants is sacred to Apollo？ （ ）。 A: Moly B: Laurel tree C: Oak tree D: Olive tree

​Just in front of our house________ with a history of 1,000 years.‎ A: does a tall tree stand B: stands a tall tree C: a tall tree is standing D: a tall tree stands

The age of a tree can be determined accurately by counting the number of tree rings it has _____.

枯藤老树昏鸦() A: Withered vine, an old tree, a fainted crow. B: Withered vine, an ancient tree, crows at dusk. C: yellow<br/>vine, old tree and fainted crow. D: yellow vine, old tree and fainted crow.

There ______ (is/are) a tree in the yard.

. a big tree it is!

Given a tree, you can find the only binary tree corresponding to it A: 正确 B: 错误

There are many___ on the mountain. A: apple tree B: apples trees C: apples tree D: apple trees