用所给动词的适当形式填空(共10小题；每小题1分，满分10分)
The TV series was so interesting that neither of them felt like _______ (go) to sleep.   
The brave soldiers were determined to save all the people ________ (trap) in the burning building.
I want to leave now; I can’t stand _____________(do) nothing useful here. 
The boy pretended ___________ (study) when his mother came in.    
The poster was revised _____________ (base)on the suggestions of other group members.  
__________(ask) around, I find many people willing to pay slightly higher prices for things that are environmentally friendly.
The boy was naughty but he always avoided _________(catch) so the teacher thought I was good.
______ (ensure) the safety of gas, the government has checked the city’s gas supply system thoroughly.
The old man is badly ill and he needs ___________(take) to hospital at once.
The problem __________(discuss) at the meeting tomorrow is about the preservation of local cultural heritage.