The most efficient way of (4)_____ hold of the ever changing map of the swirling currents circulating their heat around the planet is from space.

The ………… arises when Jack and his parents have considerable disagreement on his choice of university.

The US president Barack Obama ______ an official visit to Vietnam in May 2016, which is of great significance to the comprehensive bilateral partnership.

Most important, I can quickly either start or end an online relationship whenever I want.

We invited a pop star onto the chat show, but he didn’t turn up.

There is a fault at our television station. Please do not ................. your television set.

I now regret spending too much money on clothes.

You really saw a UFO, _________?

Margaret: “Could you open the window, please?” - Henry: “_______”

This ring is only made of plastic so it’s quite ............. .

Identify the one underlined word or phrase that must be changed for the sentence to be correct.

Every candidate under considering for a federal job must undergo a thorough medical examination.

...... behalf of the committee, I'd like to thank you for your generous donation.

Were it not for the money, this job wouldn't be worthwhile.

I can’t believe how cheap these shorts were. They were a real............... !

We all wish to create a friendly and supportive environment ________ to learning.