Let's complete the sentences with the correct form of the verbs:
The Sun gives much light. (The Sun gives light regularly, so we use the present simple tense.)
I shall try to help you tomorrow. (Since the action is scheduled for tomorrow, we will use the future simple tense. In modern English, 'will try' is more common than 'shall try', but both are acceptable here.)
The stars are shining in the dark sky now. (The stars are shining now, so we use the present continuous tense.)
It often snows in St. Petersburg in winter. (This is a general truth about St. Petersburg, so we use the present simple tense.)
We shall watch cartoons in several minutes. (The action will happen in several minutes, so we use the future simple tense. In modern English, 'will watch' is more common than 'shall watch', but both are acceptable here.)