(It's a legal requirement to pay 32 percent corporate tax in this country.) Companies ___________ pay 32 percent corporate tax in this country.
must/ have to
(Do not look at all factors, just the most relevant ones). In a PEST analysis you ________ look at all factors, just the most relevant ones.
don't have to
(Experts recommend all businesses have a social media strategy.) All businesses _________ have a social media strategy, according to experts.
should