Все предложения должны быть в Second Conditional If we (to come ) in time, we (to manage) to do it.
If he ( to visit) them, they (to know) all about it.
The studets (to realize) their plans is they ( to read) the task.
The teacher (not/ give) good marks if we ( to learn) the new words.
He ( to receive) the parcel if the postman (to bring) it.