Comparatives/Superlatives

In each sentence, put the adjective in brackets in the right form (comparative/superlative) in the first blank, and fill the second blank with the appropriate word or sign taken from the list below.

as, than, Ø, since, because

Ex. : Harvard is one of the _______________ (famous) universities _______________ in the United States.

Harvard is one of the most famous universities Ø in the United States.
The prognosis of pancreatic cancer is far (bad) that of breast cancer.

The more you eat, the (fat) you get.

The doctor's all the (confident) the tumour is benign.

My new computer is twice (fast) yours.