IV. Read the following and do as directed.
The Cu Chi Tunnels are just 35km from the huge metropolis of Ho Chi Minh City, a vast network of passageways awaits below rubber trees, compacted dusty ground and buzzing cicadas. Work on the Cu Chi Tunnels started in 1948. They were originally used to store weapons in the fight against French occupation in the First Indochina War, but by the time the Vietnam War escalated in the 1960s, a 250km warren spanned from Saigon to the border of Cambodia. The tunnels were dug by peasants and villagers with rudimentary tools; transporting tonnes of excess mud to the Saigon River or rice fields at night.
Under the circumstances, they were well built. They were higher than the river to avoid flooding, had access to a well to collect water, and masked ventilation holes within termite mounds and thick grass; defense against the much better equipped US army.
As bombers fired overhead, whole villages and Viet Cong soldiers took shelter underground. Attempts to destroy the tunnels with carpet bombing or flush out soldiers with hand grenades proved largely ineffective, but conditions were dire. Heat and lack of oxygen was overbearing; it was rife with rats, snakes and scorpions; and malaria proved deadly for many. In addition to providing underground shelter, the Cu Chi tunnels served a key role during combat operations, including as a base for Communist attacks against nearby Saigon.
Visitors to Vietnam can now crawl through some of the safer areas of the tunnels, view command centers and booby traps, fire an AK-47 rifle on a firing range and even eat a meal featuring typical foods that soldiers living in the tunnels would have eaten.
a. Decide whether the following sentences are True or False:
