同義句轉(zhuǎn)換：
Someone saw him swim across the river yesterday.
He was ( ) ( )swim across the river yesterday.
按首字母填空：
Our country has (e )great changes in the last thirty years.
漢譯英：
奇怪的是,他一直戴著太陽鏡.
It was strange that he always ( ) ( ) ( ) ( ).