they planted trees last year (改为一般疑问句)
they planted trees last year (改为一般疑问句)
More trees must be planted every year.(改为一般疑问句)
They watched trees last year一般疑问句
At the end of last year ,they had planted 3,0000 trees(找错误)
We planted trees last weekend改为特殊疑问句
These trees were planted last year.变成否定句They weren't planted
No trees ___ planted last year.
I planted some fruit trees last year.
They planted trees yesterday.(改为否定句)
They have alresdy planted some trees in the garden,一般疑问句
They planted trees last spring.下划线trees 3Q
They read the book last year.改为一般疑问句并作肯定回答