1. The river is about 5 meters deep .(对划线部分提问) &

this lake is 10 meters deep可以变成 this lake is 10 meters in deepth
那么this square is 10 square meters in size可以变成类似同义句吗

1.The river is about 10 meters deep.（对划线部分提问） —————————— ___ ___ is the river?
1.The river is about 10 meters deep.（对划线部分提问）
——————————
___ ___ is the river?
2.This is a tree. He planted the tree 3 years ago.（合并为一个含有特定语从句的复合句）
This is the tree ___ he planted 3 yeats ago.

With scuba equipment ,people can dive 200 to 300 meters deep .It helps people study ocean life clo
-sely .
求翻译,要求语句通顺,