Future Tenses: With Time Clauses

Beginner

When we describe events and actions expected to take place in the future, we use future tenses. Remember we have future simple, future progressive and future perfect tenses. Don't forget when we have time clauses, the verb in the time clause is usually in the present tense not in the future tense.
Read the paragraphs below and supply the correct forms of the verbs. Simple form of the verb is given in brackets, write the correct form in the blank. Fill in all the gaps, then press "Check" to check your answers.

1. Some authorities report that the world climate is changing drastically and (continue) to change in the future too. A new ice age is expected. If we (have) a new ice age, Northern Europe (become) very cold, as cold as Siberia, in fact. Countries like Turkey (turn) cold too. If temperatures (drop) by 10 degrees Centigrade, this (affect) life and some species (not/able to live) in those regions.

2. Some scientists, on the other hand, claim that the earth is warming up due to the greenhouse effect. They argue that because Africa is becoming a desert very rapidly, this (affect) northern regions too. Southern European regions and Turkey (become) very hot and dry. In other parts of Europe temperatures (reach) 30 degrees Centigrade in summer and 10 degrees Centigrade in winter.