Everyone has periods in their lives everything seems very hard.
A. which B. where C. that D. when
—Do you know Lily has gone to London?
—Oh，________I haven't seen her these days.
A.no doubt B．no wonder
C．naturally D．of course
Jane is an honest girl；I say it，________I don't like her.
A．even though B．as if
C．as long as D．as though
Six people were killed in the riot(暴乱)，a policeman________.
A．include B．included
C．including D．to be included
He tried his best to solve the problem，________difficult it was.
A．however B．no matter
C．whatever D．Although
On the bus I saw a student I thought was your brother.
A. who B. whom
C. whose D. He
