1 . 毫无疑问，只要你跟上我们的节奏，你就不会落后。(keep, leave)
________________________________________________________________________________ our pace, _______________________________________________________________________________________

2 . If you study in a logical way, you won’t ____________ anything ____________.

A．leave about

B．leave behind

C．leave out

D．leave alone

3 . He arrived at school early in the morning，dragging his heavy instrument case across the campus to the pitying looks of the non-musicians he had left ___________________________.（根据句意填空）

4 . The plane is about to leave, but I have left my ticket________.（根据句意填空）

5 . If you don’t work hard, you will be left____________.（根据句意填空）

6 . He always tries to avoid being_______with his headteacher.

A．left out

B．left alone

C．left behind

D．left over

7 . If you don’t apply yourself to work, you will be __________ one day.

A．left over

B．left for

C．left behind

D．left off

8 . 5G technology will ______ 15.2 trillion yuan _______ China’s digital industry between 2020 and 2025, Science and Technology Daily reported on August 28.

A．contribute, to

B．adjust, to

C．leave, behind

D．balance, against

9 . She wants to think things out quietly, so we had better ________her _______.

A．leave； out	B．leave； behind
C．leave； on	D．leave； alone

10 . Tom was so careless with his spelling that he often _______letters from words.

A．left out	B．left behind
C．left off	D．let alone