If you wish to pay with a Gift Voucher enter card number here

Can you repeat this sentence, but add in punctuation?
If you wish to pay with a Gift Voucher, enter card number here
Boot sector Virus The most probable reason behind MBR corruption may be boot sector virus

Can you repeat this sentence, but add in punctuation?
Boot sector Virus: The most probable reason behind MBR corruption may be boot sector virus.
You cant reduce the deficit by eliminating a key and ready source of revenue

Can you repeat this sentence, but add in punctuation?
You can't reduce the deficit by eliminating a key and ready source of revenue.