婴儿紧紧抓着妈妈的衬衫不放。

The baby was ___clutching his mother's shirt tightly.

她拼命抓住栏杆，生怕掉下去。

She was ___clutching the railing tightly, afraid of falling.

踩下离合器才能换挡。

Press the ___clutch to change gears.