Please buy a dozen of egges_____ you go to the grocery store.
A. before
B. since
C. after
D. when
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Mary greets_____ at the gate of her store every morning.
A. costume
B. custom
C. customer
D. customers
The online store offers free delivery_____ the goods you buy are over 100 yuan.
A. wether
B. if
C. when
D. while
If you buy three kilos of strawberries now, you will get a_____.
A. disregard
B. discontent
C. discount
D. encounter
Linda would like to have a electronic_____ to clean her_____.
A. toothbrush, tooth
B. teethboobrush, teeth
C. toothbrush, teeth
D. teethbrush, tooth