I _______ ping-pong quite well, but I haven’t had time to play since the new year.

Mary was very busy last week. She did the work all ______ herself. [ ]

What do you think about Chinese Post-90s generation ?–They are ­­­­­­­­­­­­_________ from those born before them. They are very aggressive and pretty confident because they never felt hardship.

She should have been informed of the meeting.—______，but she wouldn’t like to attend this meeting.

It is______ a sharp knife ______I can use it to cut open a hard pumpkin.[ ]