Answer:
Rita has a cold.
Are you enjoying this film?
These roses have a nice scent
We don't know where Sheila has gone.
He weighs a hundred kilograms.
Those jeans look nice on you.
Axel doesn't understand English.
He comes from Germany.
Oh no! I think the milk has boiled over.
Explanation:
The simple present tense is used when an action is happening at the time being or at a regular rate. For example, in the first sentence above, the correct form of the sentence is the present tense because the action is happening currently.
The present continuous tense indicates that the action is occurring presently, at a regular rate and will continue right into the future. The present participle of the main verb which ends with -ing is used. The second sentence is indicative of a present continuous tense because the action is in progress and will continue happening after the statement is made.