—Can you swim in a river? —_______.
---I think English is ____unimportant subject.---I don’t think so. It is ____useful tool when we talk with foreigners.
— My family and I will go back to the USA tomorrow.— ____________
-- Must I do my homework right away? -- No, you _____. You_____ do it later. A. can’t, must B needn’t, may C. may not, must D. mustn’t, can
-- Don’t cross the road when the traffic lights are red. -- .
Today she looks ______. Look ! She is looking _______ at his son.