III. Give the correct tense of the verbs in brackets. (Chia động từ trong ngoặc)
1. If we_________________(plant) more trees, the air__________________(be) fresher.
2. If the soil___________________(be) polluted, the vegetables_____________________(die).
3. Unless he____________________(call) me, I_____________________(stay) at home.
4. The weather is not very good. It might____________________(rain) this afternoon.
5. If a student_______________(recycle) the papers, he________________(save) energy.
6. I_________________________(not clean) my room for a long time.
IV. Fill in each gap one suitable word to complete the passage: (Điền 1 từ thích hợp vào đoạn văn)
Porto is the second largest city in Portugal after Lisbon. It (1)________one of the major urban areas of the Iberian Peninsula. Located along the Douro river estuary in Northern Portugal, Porto is one of the oldest European centres. (2)__________1996, UNESCO recognised its historic centre as a World Heritage Site. Among the architectural highlights of the city, Porto Cathedral is (3)__________oldest surviving structure. It attracts millions (4)____________tourists every year.
1.. If we plant more trees, the air will be fresher.
2. If the soil is polluted, the vegetables will die
3. Unless he calls me, I will stay at home.
4.The weather is not very good. It might rain this afternoon.
5.If a student recycles the papers, he will save energy.
6. I didn’t clean my room for a long time.
IV.
1.is
2.in
3.the
4.of
III,
1, plant / will be .
2, is / will die .
3, call / will stay .
4, rain .
5, recycles / will save .
6, haven’t cleaned .
IV,
1, is .
2, in
3, the
4, of