hard clear friend but begin

（1）一Who works

harder

harder

，Jack or Mike？
        一Mike.He is a hard-working student.
（2）Cindy is

friendly

friendly

to everyone.All of us like her.
（3）My sister is more outgoing than me，

but

but

I work harder than her.
（4）I didn't hear you

clearly

clearly

.Could you please say it again？
（5）The piano lesson

began

began

half an hour ago.You are late for it.