________ of the students’ parents in our class are in their .

_____we are closely united, we can surely overcome these difficulties

The Charles Dickens Museum in Doughty Street is theonly one of his Londonhomes to survive，______hewrote Oliver Twist

Elizabeth could not refuse, ______she foresaw little pleasure in the visit.[ ]

eople say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.