__________ , some students tend to develop a range of unhealthy habits .

Weather _________, we’ll go shopping.

With many problems ________, the newly selected president will have a hard time.

It’s so wet there that the trees are extremely tall, some ______ over 90 meters.

Many strange new means of transport have been developed in our century, the strangest of _______ being perhaps the hovercraft(气垫船).