1. it is very important for us to protect the________ ___ _(环境).
2. We are__________(骄傲)of our country.
3. Maria doesn’t often have breakfast ,so she often gets a ____________(胃疼)
4. I have (去了) to Guilin twice.it is very beautiful.
5. Nothing is ____________(不可能的)if you try your best.
6. Tom has _____________(去了)to Nanjing.He will come back in a week.
7. Parents often find it difficult to _____________(交流)with their kids .