来自刘晓凡的问题
IwasbittenbyadogonceandIhavebeenafraidofthemsincethen.IwasbittenbyadogonceandIhavebeenafraidofthem________.
IwasbittenbyadogonceandIhavebeenafraidofthemsincethen.
IwasbittenbyadogonceandIhavebeenafraidofthem________.

