His letter was so confusing that I could hardly make any ______ of it.

A．explanation        B．meaning          C．sense            D．guess

The real-name policy for train tickets has been applied to all trains since January 1,2012 in China, ______ I think will make it easy for people to get tickets.

A．which            B．when             C．what             D．where

The first decade of the 21^st century ______ breathtaking, non-stop development in China.

A．witnesses         B．witnessed         C．will witness        D．had witnessed

According to a study carried out by an American university, when you eat has ______ on your mood as ______ you eat.

A．much of as an effect; what                B．much of as an effect; which

C．as much of an effect; what                D．as much of an effect; which

This book will show the readers ______ can be used in other contexts.

A．how that they have observed              B．that how they have observed

C．how what they have observed              D．that they have observed

The zoologist is telling the visitors how a horse’s vision differs from ______ of a human.

A．it                B．one              C．that              D．those

Without that conversation between them, they would ______ be able to avoid mistakes.

A．in no time         B．by all means        C．in no way          D．on the whole

— Jack, this is the third time that you have been late this week.

— Sorry, sir, but I was ______ for 15 minutes on the way here in the traffic jam.

A．held up           B．put up            C．taken up          D．given up

She may have missed the train, ______ she won’t arrive for another hour.

A．in which case      B．in the case         C．in any case        D．in that case

The school board listened quietly as Jack read the demands that his classmates ______ forward.

A．be putting         B．had put           C．were put          D．have put