You ________ back from China.
A.amB.isC.are
如果你想告诉他人“我妈妈今天胃痛”，你可以说：
A．Your mother has got a stomach ache today.
B．My mother has got a stomach ache today.
如果你想告诉他人Sam吃了一个大西瓜，你可以说：
A．Sam ate a big watermelon. B．Sam eats a big apple.
如果你想告诉他人“我昨天头痛了”，你可以说：
A．I had a headache yesterday. B．I have got a headache.
如果你想告诉他人“我感冒了”，你可以说：
A．I had a fever. B．I have a cold.