A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them.
.While shopping, people sometimes can’t help ___ into buying something they don’t really need.
.Having a trip abroad is certainly good for the old couple, but it remains ___ whether they will enjoy it.
.When and where to go for the on-salary holiday ___ yet.
.The manager entered the office and was happy to learn that four-fifths of the tickets ___.
.This is Ted’s phone. We miss him a lot. He ___ trying to save a child in the earthquake.