一、用所给动词的适当形式填空.

题目

一、用所给动词的适当形式填空.

Jim,together with his classmates,______(play) table tennis now.

Last Sunday morning,i did noting but ______(write) a letter to my grandma.

When the traffic ______(stop),you can cross the road.

They needed ______(climb) the tree with a ladder.

一、单项选择.
(     )1.Tigers live as a family ______ baby tigers are 2-3 years old.
        A.and                         B.but                         C.or                         D.until
(     )2.If i don't buy them,______ will buy them.
  &nbs

答案

Is playing (此题为现在进行时,形式为be doing) to write (在do nothing but to do 的句型中,前一个do根据时态而而变化,而后一个不变化,to也可以省略.这是一个特殊句型,需特殊记忆.)stop (后半句是一般现在时时态,则...