Never put offtill tomorrow what you can do today．（ ）
| A． |
guess |
B． |
hope |
C． |
wait |
D． |
do |
May I do my homework now，dad？
﹣Yes，you____（ ）
| A． |
must |
B． |
may |
C． |
can |
This is____friend，Sam．（ ）
| A． |
I |
B． |
my |
C． |
me |
﹣﹣May I come in？____，please．（ ）
| A． |
Hold on |
B． |
Sit down |
C． |
Come in |
Boys and girls，look____the blackboard，please．（ ）
| A． |
at |
B． |
out |
C． |
in |
I will never forget the people help me a lot in my life．（ ）
| A． |
whose |
B． |
when |
C． |
which |
D． |
who |