Fill in the gaps with the correct form of verbs provided.
(a) At present, Bangladesh, particularly Dhaka_______ (become) polluted rapidly.
(b) Outdoor and indoor pollutions _______(cause) death of huge lives each year.
(c) The consequences of sound pollution________(be) really dangerous.
(d) Pure drinking water_________(have) also become rare.
(e) Serious water-borne diseases________(be) very common.
