his works earned him quite a reputation inLiverpool, he has stayed there most of his life, ____ the occasional visit tohis hometown

to nuclear radiation, even for a short time, may produce variants(变异)of genes in human bodies.[ ]

She has the flu（流感）, so she can’t come to the party . .

Eric isn’t good at English and he finds difficult to understand his English teacher in class.

Tony, do remember to send the report to the sales manager!—-___________.