问题
选择题
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
A．holds; contain
B．holds; be contained
C．is held; contain
D．is held; be contained
答案
答案：A
此题考查动词的语态知识。hold表示“容纳”，contain表示“装着”时都用主动形式。