— 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
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
The zoologist is telling the visitors how a horse’s vision differs from ______ of a human.
A．it B．one C．that D．those
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
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
The first decade of the 21st century ______ breathtaking, non-stop development in China.
A．witnesses B．witnessed C．will witness D．had witnessed
