3. You ... wash vegetables carefully before using.
A) mustn't
B) don't have to
C) haven't to
D) have to
4. Betty has a temperature. She ... take her medicine.
A) must
B) hasn't to
C) isn't able
D) mightn't
3. You ... wash vegetables carefully before using.
A) mustn't
B) don't have to
C) haven't to
D) have to
4. Betty has a temperature. She ... take her medicine.
A) must
B) hasn't to
C) isn't able
D) mightn't
A) mustn't
B) don't have to
C) haven't to
D) have to
4. Betty has a temperature. She ... take her medicine.
A) must
B) hasn't to
C) isn't able
D) mightn't
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A) must