Random Puzzles - BrainBashers

???

Puzzle 1

Find two words, which are anagrams of each other, which complete this sentence:

Due to a recent outbreak of a ? infection in the zebra house, the local animal sanctuary had to ? their electron microscope correctly, to ensure rapid detection.

workings hint answer print

www.brainbashers.com /puzzle/zbzt share

Puzzle 2

Place all of the digits from 1 to 9 into the circles so that the sum of the numbers in each straight line is the same.

workings hint answer print

www.brainbashers.com /puzzle/zsrg share

Puzzle 3

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

workings hint answer print

www.brainbashers.com /puzzle/zsvq share

Puzzle 4

How should these words actually be spelled, without using a dictionary.
bizz-ness
com-it-ee
sin-seer-lee
ark-ee-ollow-jist

workings hint answer print