Food supplies ________ before the trip ended．

had run out

has been out

has run out

run out

He can’t be in hospital now．It has been years since he ________ ill in 1999．

fell

got

was

became

(探究题)I’ll return the book to the library as soon as I ________．

will finish

am going to finish

finished

have finished

I’ll call on some of my old teachers while I ________ in Guiyang．

stay

will stay

would stay

am staying

I wonder why Jenny ________ us recently．We should have heard from her by now．

hasn’t written

doesn’t write

won’t write

hadn’t written

I first met Lisa three years ago．She ________ at a radio shop at that time．

has worked

was working

has been working

had worked

The first use of atomic weapons was in 1945．And their power ________ increased enormously ever since．

is

was

has been

had been

I can’t go swimming because I ________ my leg．

broke

had broken

have broken

have been broken

She has set a new record, that is, the sales of her latest book ________ 500 million．

have reached

has reached

are reaching

had reached

It has been raining for three days．________, cars can’t pass through this village．

As a result

As long as

As well as

As if