1 . We will put off the hiking until next week, ________ the weather may be better.

A．that

B．when

C．which

D．where

2 . Between the two halves of the football game is a 15-minute break, __________ the audience can have a rest．

A．when

B．where

C．which

D．that

3 . Mr. Smith owned this oil painting until the early 1990 s, ____________he gave it to his grandson.

A．which

B．when

C．where

D．who

4 . 5G commercial service’s being officially launched has opened a new digital age, ____ not   only technology but also people’s work capacity and lifestyle will be upgraded.

A．as

B．where

C．when

D．which

5 . We will put off the picnic in the park until next week, ________ the weather may be better.

A．that	B．where
C．which	D．when