My sister ____English since she was 9years old．She can talk to foreigners freely．（ ）
| A． |
Learn |
B． |
know |
| C． |
has learn t |
D． |
have learn t |
Dr Li's wife about him very much when he worked in Wuhan in February， 2020． （ ）
A．worryB．worriesC．worried
smart! This new kind of taxi can go without a driver．
Amazing! Let's have a try． （ ）
A．WhatB．HowC．What a
is necessary for us to wash hands when we are back home．（ ）
A．ItB．ThatC．This
China is famous its long history．（ ）
A．atB．inC．for
Nowadays， Xiangtan is nice city to live in． （ ）
A．aB．anC．/