She could have begged at the church door or entered a home for the penniless and the aged.

She could have done just as well as you, ______ the chance.A．givenB．to giveC．givingD．give

I don’t know where the key is, but I suppose I ____________it at home.A. could have left

We could have walked to the station. It was so near. A taxi______at all necessary.A．wasn"t

I wondered if she could have the opportunity to spend______here so that she could learn mo

Jack told his daughter that she could have she wanted for Christmas.A. which B. whatev

I didn see your sister at the meeting. If she _____ she would have met my brother. [ ]A. has come