挑战习题
1
/5
单选题
难度：
1.I can see ten _____ in the picture.
A
sheep
B
dog
C
pig
D
提示1：
VGVu5ZCO55qE5ZCN6K+N5bqU6K+l55So5aSN5pWw5b2i5byP44CC
正确答案：
QQ==
VGVu5ZCO55qE5ZCN6K+N5bqU6K+l55So5aSN5pWw5b2i5byP44CCQuOAgUPpg73mmK/ljZXmlbDvvIxB5Y2z5piv5Y2V5pWw5Lmf5piv5aSN5pWw77yM5pWF6YCJQeOAgg==
2
/5
单选题
难度：
2.We should clean ____ twice a day.
A
our tooth
B
our tooths
C
our teeth
D
提示1：
54mZ6b2/5LiN5q2i5LiA6aKX77yM5omA5Lul5bqU55So5aSN5pWw5b2i5byP44CC
正确答案：
Qw==
54mZ6b2/5LiN5q2i5LiA6aKX77yM5omA5Lul5bqU55So5aSN5pWw5b2i5byP44CCdG9vdGjmmK90ZWV0aO+8jOWxnuS4jeinhOWImeWPmOWMluOAgg==
3
/5
单选题
难度：
3.My two brothers are both ______.
A
policeman
B
policemans
C
policemen
D
提示1：
5Lik5Liq5ZOl5ZOl6YO95piv6K2m5a+f77yM5omA5LulcG9saWNlbWFu5bqU6K+l55So5aSN5pWw5b2i5byP
正确答案：
Qw==
5Lik5Liq5ZOl5ZOl6YO95piv6K2m5a+f77yM5omA5LulcG9saWNlbWFu5bqU6K+l55So5aSN5pWw5b2i5byP77yM77yM5LiN6KeE5YiZ5Y+Y5YyW77yM5YW25aSN5pWw5b2i5byP5Li6cG9saWNlbWVu44CC
4
/5
单选题
难度：
4.There are two____ in the office.
A
woman
B
womans
C
women
D
提示1：
5Lik5Liq5aaH5aWz77yM5omA5Luld29tYW7lupTor6XnlKjlpI3mlbDlvaLlvI/jgII=
正确答案：
Qw==
5Lik5Liq5aaH5aWz77yM5omA5Luld29tYW7lupTor6XnlKjlpI3mlbDlvaLlvI/jgIJXb21hbueahOWkjeaVsOaYr+S4jeinhOWImeWPmOWMlu+8jOS4undvbWVu44CC
5
/5
单选题
难度：
5.
There____ some ____ in the river.
A
is ,fish
B
are, fishs
C
is, fishs
D
are ,fish
提示1：
PHA+U29tZeWQjueahOWPr+aVsOWQjeivjeeUqOWkjeaVsOW9ouW8j+OAgjwvcD4=
正确答案：
RA==
PHA+U29tZeWQjueahOWPr+aVsOWQjeivjeeUqOWkjeaVsOW9ouW8j++8jGZpc2jljZXlpI3lkIzlvaLvvIzlnKjov5nph4zmmK/lpI3mlbDmhI/kuYnvvIzmiYDku6XosJPor63liqjor43kuZ/lupTnlKjlpI3mlbDlvaLlvI/jgII8L3A+