The driver could have survived but he ________ the seat belt．

wasn't wearing

had been wearing

hadn't worn

didn't wear

Despite their _________ of interest, Fleming kept trying to develop chemical _________ it would be safe and effective．

lack, so as to

lacking, so as to

lack, so that

lacking, so that

_________ delighted me most was ________ my son was admitted to Beijing University．

That, what

That ,that

What, that

What, what

the, a

a, a

\, the

the, the

To learn to swim well, ________．

one needs much practice

much practice is needed

much practice needs

one is needed much practice

The next thing he saw was smoke ________ from behind the house．

rose

rising

to rise

risen

They began to think about what use could be ________ such materials．

made up

made from

made out

made of

Tom ________ close the window when his attention was caught by a bird．

was to

went

was about to

would

He has made some spelling mistakes in the paper; ________, they are not serious．

but

therefore

even if

however

I ________ say he ________ speak to her in public at that time, for he was such a shy boy．

dare; dares

dare; didn’t dare to

dared; dared

dared; dared not to