改错，下面句子中有一处错，指出并订正。

It's very cold outside．Please wear your hat．________

根据A栏的句子，从B栏中选择正确的答案。

(　)1．Don't be late．

(　)2．Maria, do you have to go to bed till 10∶00?

(　)3．Can we discuss in class?

(　)4．Does he have to go?

(　)5．Let's have strawberry!

(　)6．Are they happy?

(　)7．How do you do?

(　)8．Can I ride your bike?

(　)9．What should I do?

(　)10．Don't run in the hallways．

a．Yes, I do．

b．OK, I won't be late again．

c．You can tell me．

d．Yes, you can．

e．That sounds good．Please wash your hands at first．

f．Yes, they're having a good time．

g．How do you do?

h．No, he doesn't．

i．Yes, but don't talk loudly．

j．Sorry, Mr Zhang．

It’s time for ________．Please wash your hands．

A．have lunch

B．eat lunch

C．have the lunch

D．having lunch